Rigging

[Goat150]

Guess I'm having trouble I think with
my 337 H being out of rig. I've never been able to get the speed that most do. It shows about 130 and fills like it's always
in a slip. I have checked around Ohio and can't find an A/P that knows enough to
check it. I even had one say you must have some special tools, to rig them.
does any one have any thoughts.
Mark