Sorry PL,
Is this it?
http://www.pbreview.com/products/rev...od=1211&page=9
Everything I have read about the Marauder PB gun is awful. That its cheap and made mostly of plastic(read disposable).
Links:
http://www.pbreview.com/products/rev...od=1211&page=5
Your best bet is to return it to the seller and buy a quality product, If you cant or wont do tha you might spend $35 -$60 for upgrades to make it work like a good $40.00 Paintball marker.
To fix yourself w/o parts??
(auotcocking problems)
http://www.paintballtimes.com/cockqa.htm
I found no pages on sputtering problems.
Vern