I haven't ever played with them so only going by what I've read, but do you also struggle to space them out at one end to add preload if required? Would seem really weird if you're not able to, even if by only a little to help. So many advantages over a conventional steel spring in theory, especially in terms of refinement if the set-up is correct, but, in practice, the metal spring offers up so many more ways of being able to fine-tune the system for individual needs and preferences. The "Rammer Bash" just wouldn't have the same ring to it either, would it?