My buddy brought over his 2 skis that have been covered and sitting in his garage since 05. The 04 has only 18hrs and the 99 has 45hrs and a bunch of bolt ons to the motor. They were just put up, no fuel drained or winterizing prior to storing. I'm going to start with a pair of new batteries and replacing the old fuel and spark plugs. What other steps should I take before attempting to crank em so I don't ruin the pistons or crank or anything else for that matter? Thanks in advance guys .