I finished my 288xp lite build almost a year ago and absolutely love it! I did a little work smoothing the ports and polished exhaust but didnt modify much. Opened existing muffler port and also forgot to install the base gasket. I plugged my decomp, but it definitely takes some muscle to pull over. If i get much older, ill likely reinstall. I think youd be quite pleased with some mild port work, but the 288 is a horse regardless. One of those saws that'll put a smile or occasionally a bit of fear on any face. Nice build/thread. Just curious, did you alter the compartment separator for the intake? My first assembly attempt resulted in intake leak because removing the base gasket dropped the jug just enough to throw things off. trimmed the separator and all was good.