Stripped Torx Star Head Bolt T595

So this is the plan...I have discussed the welding of a nut on top of the bolt with a local mobile welder. He’s only seen the photos but he reckons it could be a tight job in the corner, directly beneath the frame...he’s coming to look tomorrow (he luckily lives 10 minutes away). In the meantime I bought some dremel diamond-tip bits (some of them really sharply pointed) to cut a hex into the head bolt, thinking at worst I’d be burning out the oil for a nice clean weld.
I approached the hex job today, but abandoned it because even the dremel was too tight against the frame...I’ve now ordered a flexible extension, so will try again in a couple of days, with the welder’s position known.
I really like the idea of the paste...I reckon that could help my hex project no end, so thank you!

 

Blimey, Iceman, another phenomenally generous offer, that’s so kind of you. If all else fails I’ll definitely take you up on that!
The welder guy said it would be a really tight squeeze, and the issue would be getting the rod through the nut to the bolt itself, because even the slightest angle makes it near impossible to do that. Probably engine out for the welding.
So, dremel in a day or so for phase I, plus I’ve bought a snap-on easy-out, which could offer up a phase II, then...well, then I’ll be taking you up on your extremely kind offer, and then...well then, if absolutely nothing works, it’s engine out for the welder...the head WILL come off!

 

So, something very exciting happened today and I can’t stop smiling!

 

To conclude this post I can say it’s been a bit of a journey...the welder felt that any other bolt on the head could’ve had a nut welded to it, but the corner one, beneath the frame, it was just too tight SO...
I ordered an extension for the dremel which gave me slightly better, though still angular access, and ground out the bolt to firstly receive a Torx Plus (this too chewed out). Eventually, with some pink grinding attachments I proceeded to grind out a round hole in the head bolt, which then received a Snap On extractor like a dream...even with the smallest bite it shifted that head bolt from near full torque...SO impressed.
Of course, absolutely any other bolt on the head could’ve probably been reached with a drill to shape it up...but the dremel tool did its job, leaving me with a grin from ear to ear.
I’ve had the offending bolt sorted for some time, but was waiting for a Facom Torx bit to arrive (which it didn’t), before finally going for it and ordering a Snap On T50 to remove the remaining bolts! Even though the remaining bolts were ‘used’ the Torx driver bit hard and still looked as good as new afterwards - you can tell I’m sold on Snap On. I’m now ordering the half dozen or so bits required to dismantle the bike so far (Torx, Sockets, and Allen, etc.) to keep as a tool kit for the bike, I’m that pleased with them.
Anyway...pictures...and thank you all again for your support and help!

 

Thanks for the encouragement...I was 100% sold on Snap On the second that extractor chewed down into that bolt head, bottomed out and held up against my extension bar, such joy!
Equally, when my new Snap On T50 took out the remaining worn and rough-headed bolts without so much as a graze on the splines...that was a pretty ecstatic experience too

 

A mobile welder took a look at it and felt the angles were too tight to easily make contact with the bolt head through the nut, and there was no option/space to weld around it. Apparently, if it had been any other bolt in the head it would’ve been easy, but not so with the corner bolt directly beneath the frame. At least that was his explanation...I had zero knowledge on arc welding to contest it.
Such a relief to get it out though!

 

You can buy the set new for £80 or just £5ish a piece, unbelievable value! When I inserted the first extractor it chewed in and bit really well, but slipped under strain. So I enlarged the hole a teeny bit more and inserted the next size up, which held fast...that would’ve cost £10 for both bits new, excellent value for money

 

Just to wrap this one up...I think it needs a tuneecu sort out, and maybe one of the injectors is weeping, but otherwise a credible first start, after a long LONG journey.
Exhaust is blowing at the bottom joint but, otherwise, does it sound ok to you?
https://youtube.com/shorts/y-Z1zobNRhk