Ive been off the tools for a few years but nothing in a bottle/tube fixes stripped threads.
The best repair I have seen is Wurth timeserts.
I used them a as mechanic then I was a rep for them for awhile a few years ago. Im not cut out for a tie!
The video is cheesy as hell but explains how it works. Germans make funny videos.
They are miles better than helicoils as timeserts are a solid bush, not a flash spring.
Wurth NZ is in Manukau Auckland, reps all over NZ.
I reckon on the Trumpy buying a kit will pay off then next time it strips a thread.