My blaster had this annoying rattle that I just could not find, all the nuts and bolts were tight but still had the rattle.. I ran out of gas one day but had some in the tank, while checking to see if my vent hose was crimped or something I noticed a "thing" with screws on the inside of the gas cap, so I took the screws out and there was 2 bearings inside, took the bearings out, hasnt rattled since, hasnt starved for fuel either... Anyways figured I'd post it..