ok so, i bought a neuma hybrid and electric module off of ebay for dirt cheap. got it and tried to use it but it sounded really quiet,even when i raised the voltage up high. then when i brought it down, it was still quiet but after rubbing my thumb along the post, it got crazy loud and rattled a lot. so i opened it up only to find that the insides just had a gear looking thing and thats it.no motor, small parts,etc. i cleaned everything, put it all back and ran it. it ran better but still seems inconsistent and rattly sounding at times.just doesn't seem to have too much power behind the hit and it sounds temperamental at times. any suggestions to make this thing run how it should or is this the problems to be expected with the hybrids? i had the original and used a compressor n it was awesome. basically what got me interested in rotaries in the first place.this one though, not too impressed so far. help a brother out will yathanks