Quote Originally Posted by TonyL View Post
Question is, this thing is seemingly so, so efficient, could I actually get away with that nice, weak TX spring? I'd be happy at 9.5 - 10ft.lbs and sweet, soft shooting. As I can't make guides and top hats, I'm guessing then that the TX rear guide would work fine with the flange being 30mm and guessing piston rod will work with the TX guide. If the flange is no thicker, rod should go through to the trigger okay, too?
I still think it's too short / weak, but if you have a guide that fits a TX spring, try it

Personaly I think 3.2 mm wire soft wind will be your sweet spot. A man of your experience must have the ubiquitous "big box of random springs" on hand to play with ? Or I can bring mine and we can try some at the bash