Thanx I'll check......it has been mostly one jug at a time but it has been both....after the both went I changed the crank seals just to make sure, then I blew the clutch side jug.....new jug on jetted up to 300 from 290 and not holding it wide open for the moment checking the plugs regularly.
After the rebuilds are you breaking in the engine properly?
No wot, vary throttle as much as possible for at least 1 tank full, and no wot on 2nd tank.
That sled is liquid, is the water pump OK, plugged lines or exchanger?
Does this happed in low snow or icy conditions?
What did the plugs look like after each meltdown?
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