I've been working on rebuilding my now 8+ year-old G&G mp5. Its performance is pretty much where I want it, however in auto, I am getting feeding issues. Being as old as they are, I suspected my mags were the problem, so I got new ones (Echo 1 mid-caps and a G&G hi-cap). While they fed better than the old ones, it's still noticeably skipping rounds in auto (semi feeds just fine). I understand Mp5 mags were never really known for feeding well. I'm open to trying a different kind of mag, but not sure what brands to go with these days. The next thing I tried was adding a sector delayer, which only resulted in breaking the tappet plate. I've since replaced the tapped plate and removed the delayer - the problem persists... What could I try next? I know I'm close, but can't quite figure it out. My build list is as follows, any parts not mentioned are stock: CYMA cylinder (I disabled the blowback system) SHS full metal rack piston (short stroked 3 teeth and AoE corrected) SHS M120 spring SHS 13:1 gears (short stroked 3 teeth) G&G ETU w/ Perun ETU++ MOSFET SHS High Torque Motor Guarder hard bucking My xcortech chrono has been reading 335-340fps and anywhere from 11 to 25 rps (probably due to inconsistent feeding) on .2g "Lancer tactical" bbs and an 11.1v lipo.