Quote Originally Posted by trajectory View Post
Could be a possibility, I think the Meteor spring has been used as a substitute by others in the past, not sure of the Airsporter spring is the same diameter or not, but thanks, might be worth looking onto a bit more.
I used a V-Mach BrumBow one in mine but only because I had a few! You might like to investigate HW85/95/98; Haenel 303 or Titan #7 springs! You never know, someone may have such a thing kicking around and could help out!

If; when you have it sorted and tested for MV and ME and variations; I could help you to refine the innards to get the values desired (assuming you were not there already!). I would urge using a custom main guide and Top-Hat assembly though; makes all the difference in eliminating the internal cacophony! Whether it's worth all that effort; only you can decide!

atvb
David