Not a fan of fixin what ain't broke, so no knowledge regarding a Bowman ring.

Best of luck with the new engine. I hope you won't be shy regarding your experience with it?

Regarding weight, the 20cc RCGF is about 3 ounces heavier than the DLE? I read they were close to the same so I'd assume the 26 would be a hair heavier as well. But geez, with performance approaching that of a 30cc engine, with the weight and foot print of the 20? I think this engine is a game changer for those looking for top drawer power to weight ratios! -Al