If your happy with the V-Mach kit fitted to your TX why would you not be happy with one fitted in the Pro Sport.
What's the point in spending a damn fortune on a V-mach kit (and make the PS even harder to cock because of the stiffer spring) when all he needs to do is spend a small amount on a couple of Delrin guides to eliminate the twang and keep the spring already in it.
Pete
Far too many rifles to list now, all mainly British but the odd pesky foreigner has snuck in