I had a little trouble with my muffler loosening up, not getting proper cooling flow, and a weak steering pushrod - but now it's running like a top. I am very satisfied with it - though the hull lamination is pretty thin.

I have a tip for folks running the canister muffler too - since it retains water, it should be drained by rolling it to the exhaust side after each run. Otherwise, the water may inadvertently drain back into the cylinder resulting in rust (long term) or difficulty starting (short term).