ok so i just purchased a 96 XP to go along with my 96 GSX they both have the same 787 engine in them. well i just bought the XP last weekend and well it ran good for about a week and is now having some sort of problem and when i give it full throttle to get out of the water it sometimes bogs down and shakes the entire ski. but then sometimes it jumps out of the water and accelerates to full speed but then all of a sudden seems like it has no gas and slows immediately down and runs at a slow speed. I took it to my mechanic and he said it could either be the computer or a fuel system problem. but i have no idea which. oh and on my 96 GSX my trim doesn't work but the gage does does that have to be rubilt or can i save it? thanks help is very much appreciated!!!