2019 Speed Triple Mirrors

Sorry I am quite late to the party but I recently bought a 2019 Speed Triple with 500 km on it. I have many questions but I will attack it all slowly.

I've been buying some carbon bits and pieces, a Oberon fuel cap I now hate (just does not sit straight), and the bike came with lots of addons already.

So I wanted to replace my large Triumph mirrors with likely Rizoma Bar End mirrors. The problem I have is how do I remove the insert that triumph has in the handle bar for their mirrors? I read a few things that sounded somewhat ridiculous like glue a bolt in and remove it by screwing it out? Something like that. I may want to re-use them down the road.

Does anyone know exactly how to get those inserts out and keep them to reuse?

Thanks for any advice,

 

Unfortunately I tried that and it did not even budge. I think it is threaded in there but hoping someone can confirm.