Or - all of the above? You're definitely burning something other than a normal air/fuel mixture. Time for a magnetic particle test (AKA Magnaflux). Or, new heads...
Summit Racing SUM-162108 Summit Racing™ 62cc Aluminum Cylinder Heads for Small Chevy | Summit Racing
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Damn, prices have gone up!
yes they have, too bad, cause i would have liked to get some Aluminum heads.
really don't want to spend money on them, as you can appreciate, haha.