I found drill sizes by the 100th of the mm. jewelers drill
I drilled out to a 102 then..
still feels like i a bogging but was gaining some power the bigger i went.
I am going to check again for leaks. I just built this case, dont know why it would be leaking. I checked it thoroughly.
the setup
polini 4 petal reed case
parma crank
parma 70cc h20 kit
19mm sha
doppler exhust