2020 - Bonneville T120 - Zero Inlet Valve Clearances!!

Winter is here so I decided to check the valve clearances etc.. The bike is just over one year old and has 16,600 kms. After the major battle to get the valve cover off I could finally measure the clearances.
The Exhaust Valve clearances are all in the mid-spec range - so OK.
However, measuring the Inlet Valves, all four were "tight". So much so, that I couldn't get the skinniest feeler gauges in there! Sure, I rocked the camshaft etc. to ensure the valve was fully closed (i.e. max gap).
The rocker arm is 100% in contact with the shim - there is zero gap.
Next, I slowly loosened the rocker arms to try & observe any further movement / extension of the valve spring. It did not appear move any more. Also, when I rplaced the rocker arm and torqued it down it did not appear to move.
Apart from checking the clearances I also wanted to identify the original shim sizes that were installed.

Over the (many) years I've done valve shims etc. on many different bikes (new & old) but this is the first time I've ever seen the Inlet Valves with Zero Clearance.
As many of us know, the inlet clearances tend to be stable and it's usually the Exhaust clearances that change the most.

My questions:
1. When calculating the New Shim Size should I use the measured clearance as Zero and also aim for a slightly higher new clearance than the usual mid-point (Inlet Specs are 0.05 to 0.13 mid-point is 0.09mm)
I attached a new copy of my Calculation Sheet using increased target clearances for the Inlet Valves (can't upload Excel file)

2. Has anyone else ever seen this issue?

3. Are Triumph shims the same physical size as, say, Honda or are they uniquely Triumph specific? There is no local Triumph dealer in Northern B.C.

Bit of a long post but I'd appreciate comments, suggestions....
Steve T.

 

New shims arrived today... I'll fit them tomorrow and see what happens!
BTW - the Triumph shim diameter is 9.5mm and Made in Japan.
Unfortunately, I cant find my old Honda shims anywhere to a comparison...

 

New shims (5) are in and clearances are now towards the upper spec.
The rocker arms are a real pleasure to work with - great design.
Shame about all the crap that has to be removed and disconnected to get the valve cover off and then put it all back together - nothing difficult, just tedious but far easier than my Honda Africa Twin or Honda Varadero (V-twin DOHC shim under bucket).

Here's a couple of pics.
Everything between the frame/spine to the valve cover and radiator cap has to be removed.
Two bolts allow the rocker arm to be removed and the shims are easily removed with a magnet.

P.S. She fired up a treat

 

Thanks
The first time pulling it apart is always the hardest. For sure I'll be in there again next year and it'll be a quick afternoon's work .
Also managed to tidy up some wires for my GPS and running lights (but still a rats nest under the seat )

P.S. The shims can be seen sitting on top of the valve springs in the last photo above

 

There's nothing special with the spreadsheet. I saw one once with @lookup tables etc... and would indicate the size shim required. The tables I use are "manual" entry so I can play around with the numbers... e.g. what spec gap I want, pick a shim size....etc.
I find it useful and visual. I'm not allowed to upload the Excel file. I'm sure you can make a copy based on the images earlier in this post.

I don't think we can do this in "Conversations" etc...? If you wish, you could send me your email and can try to attach a copy??

PS I now have a Guzzi V7 850 Special Edition alongside the T120 (now +44k km). Guzzi valves are so easy and accessible ...old tappets - ring spanner and screwdriver! Hardest part is finding TDC by rocking the rear wheel