So I have not been having very good luck with my engine lately. She was purring along fine so I decided to add back on my SBP expansion chamber. She got the expected pickup but also started running hotter. Over the last few weeks I have been trying to resolve the heat issue trying different jet sizes and generally fiddling with it. But it seemed she kept on losing power. I have only taken short rides while trying to solve the heat issue (1-2 miles per run). I even ordered a new Speed carb since I had mixed the parts between the NT and the Speed carb and couldn't figure out what parts belonged where. But even the new carb didn't resolve the issue. So I pulled the SBP pipe and had even LESS power. I pulled the piston and saw that my piston was burned. The cylinder is still in great shape no scoring or burning and the rings do not appear to be broken or damaged. I have been running a 32:1 mix on my third gallon through so still enough oil. Not sure why the piston is getting toasty or what to do to get the missing power back. Like I said I have fiddled with the jets and am pretty much back to stock. Also have a brand new NGK B8HS plug (was having good luck with it with the SBP pipe on). Any ideas would be great, thanks!