Ok, my front aka mag piston just went for the 3rd time...

5 mins and it blew just like the other times. Ring got smashed up, goged the head and everything.

Th shop guys, says its running very lean, the piston will get super hot and expand causing this.. Plus the cold water shrinks the cylinder making it wose..

Anyways, unless there is another problem, I can figure out why I am running so lean. The plugs def do look lean. I have stock jetting and have clean the carbs many times. Stock motor besides bored .50 over, and after market water box. Runnning pre mix, no injector.

I am thinking maybe since I am running pre-mix the gas is thicker, and I need to go up a couple sizes on all the jets.... I dont know ??? any help?

The reeds are good, and I am alomst sure there are no air leaks...

I gotta figure this out....

All the heads on the 1050 are the same right? There isnt a differnt on for the mag cylinder right?

Also, my exhuast hose, from the water box to the back of the ski, got soo hot it almost melted, this happened the last time too.. and my line and ofcies from the pipe are clear...

any ideas