Exhaust holes closed!
It turned out that these holes are accusable from below coming through the
rotor housing aluminum. I just taped a 3/8x24 thread into it and closed it with
a 3/8” long set screw. Did lot have to tough the steel insert.
That was a quick and dirty fix.
Thanks everyone for all the good response.
Hopefully no more oily belly on the airplane.
Richard
Sohn
N2071U
http://www.fairpoint.net/~res12/home.html