Hi there, I'm not motor head but i'm in it this far I thought I would seek advice before I threw any more of my life away. This sled sat for a couple years as a mouse hotel. pulled apart the carburetors, cleaned and shined, replaced some fuel nozzles. winter came and went it sat taken apart for a couple more years. Struggled then to get the pistons to turn but now they are jammed. I took the jugs off the pistons and tow of the three arms won't really turn at all, the whole area is full of crud. Is it worth even trying to salvage this thing or should I put it out for parts? thoughts?