I don't know any of that. I just saw a video on YouTube where the guy cut the gasket out and said it ran better.I don't know much about the case. Did they block the strato ports and use a strato piston at the same time? Did they install a strato carb with a shutter (or an independent shutter) for clean air in this saw?
Because if not, it's nothing new. There have been chainsaws that use a strato cylinder with gasketed strato ports for over 20 years. Only such saws use a normal piston and a normal carburetor.