I have a 96 Waveraider 760. Starts and runs great for hours, right off the trailer. The problem is when I turn it off for about 30 minutes or so, it wont crank back... I have to pull it back to the dock with another ski. After a couple of hours, it starts back like nothing was ever wrong. I have been reading posts about changing the choke to a primer system. Could this help solve the problem? If so, where can I pick up a primer kit, and how easy is it to change out? I am not very mechanically inclined, but can follow directions. Any input would be greatly appreciated.