so i removed the gas tank from my husqvarna 350 and was using parts off another chassis and ended up with one crankcase bumper with the screw for it leftover. i installed two at the bottom of the saw and cannot find where the third goes. this has been driving me nuts! i think i may have accidently taken one off the other chassis and mixed it up with the parts for my saw. are there three of these crankcase bumpers on the saw or only two (part number: 503 86 92-01)? i know this seems silly, but it happened.