i can't help, haven't built the new mk65 but how do you like it otherwise?
82 seems kind of on the big side, do you have the au262 atomizer and bushing?
i've been scared to try one until i hear firsthand how the new piston works in there. i loved the old ones but i'm not sold the copy is as good as the OG. that really nice meteor piston they shipped with was a pretty big part of the special sauce