Hi and thx for the reply
We actaully spent the last 3 days taking the back portion off, ( we are not mechanics and certainly not skilled sea-doo mechanics) and we discovered that the (drive shaft??) was eaten up on one end, almost like it was spun. We had alot of trouble getting through the incredible amount of silicone on the back, but when we finally did, it poured out a thick, syrup-like oil that reaked of burn? We have been checking around for this part, and it definitely isn't a cheap one, running about $150 off ebay.