Ares MK43 - Hopup jamming?

[Naveronski]

I have an Ares MK43. It... sucks. But I want to figure out why, and make it work.

 

The problem I'm having is that the hopup seems overly sensitive. If I adjust it too much, I will get my BB's to fly level for a few rounds, then the inevitable jam and stripped piston. If I adjust it too little, it will feed forever, but the range sucks.

 

I've put three pistons in it and don't want to keep feeding them only to have this problem reoccur.

 

Is there an aftermarket hopup unit I can put in it? Would changing out the bucking/nub make a big difference? What am I missing here?