just adding helping hand for egg users since i had the same problem, if the lid cracks off at the screws, replace the loops with some epoxy, a steel washer n some fibreglass, done that and it works a treat... will have to do the same for all the screw holes since theyre all cracking
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o yeah, the other thing is, if you dont want the battery lid to crack the rails it hooks on, sand down those spikey things which make contact with the batteries a bit, and it puts alot less stress on lid.......
thats my 2p even if it is only vaguely related
on the speed issue... i dont see the problem really since my gun doesnt have ramping, n i dont think i can fire at 15bps anyway