A lot of folks look to SBT, and some dig in themselves to save a little and learn a lot - have you tried to add oil in the spark plug holes and turn around to loosen rust from neglected winterizing? The fuel system clogging from steel gas can trash or the lines themselves dissolving has caused much trouble for the whole seadoo 2stroke family, this is another area where hands on maintenance saves a lot of silly troubles that end up costing large bux and if forgotten end up in burnt pistons, you need to know what caused the "frozen" engine and proceed to repair after inspecting sliding and rotating parts.