Hi new to the world of skis. I recently got a 1997 gsx 951. After much reading on this site IM questioning how the best way to tell if I should rebuild the motor this winter. It has the grey tempo lines that IM going to replace this winter and I'll rebuild the carbs and filters also. Is there an accurate way to tell if the motor needs rebuilding? It runs amazing the couple times I've had it out. It hits the RPM'S and speeds correctly for the year. I don't have any past maintenance info on the machine & it has about 200 hours on the meter. I am suspect that someone has done some motor work on it at some point being how immaculately clean everything is, along with a finger throttle lever and IM guessing aftermarket air cleaner. Is a compression check a good indicator or should I run it as is until something gives. Thanks Guys.