"
"I mill around 1mm from the base of the cylinder and use a super thin base gasket to raise compression."
can you cut that much and still have enough squish on that. Brad Or Mastermind can probly answer that. never touched a 550
still abit out of my price range regardless lol
You can not even run without a gasket on the 550 or 562 without interference.
Brad beat me to it