Hmm, I may be able to up the budget to accommodate some safer parts, such as a proper reg and a somewhat decent 3/2 Solenoid. Is it useful to have a QEV on a crusher, or just a plain slower dump valve? I'd assume a plain dump valve wouldn't hurt. Also, is a 100mm bore the absolute minimum for a crusher? Or could I get away with around 50-ish (And above, 63 etc)?

Thanks for the help.

Edit: Oh, and what's the best way of shortening a ram? I may have found one with a good bore, but it's too long.