Ed EHP had one up at John (Gypo) Lambert's weekend, back in Jan. That thing "kicked ass". I believe that the Supers are very rare and are priced accordingly. Grab that new muffler, and don't waste that saw on firewood. Get it checked out and brought into full tight crankcase condition and compression tested. Full tune up as well. You sure wouldn't want to ruin (waste) that saw because you overlooked some leaking 40 year old seal and got a lean seazure. Don't risk it to any cheap "semi-knowlege" mechanic, or the same can happen. I'd treat like an old hemi. You'd be hard pressed to replace the piston and cylinder. Enjoy it! Mike