[R-390] Oldham Coupler Idea

[Barry]

> It likely will have no effect on anything.  Like Roger
> said, backlash is a function of friction, properly
> maintained that coupler should give no problems.  If
> you want to improve its operation the best move would
> be to take out any mis-alignment by shimming the PTO
> mounts so that the shafts are as close to parallel as
> possible, then the Oldham coupler is basically out of
> the equation as it's only function is to make up for
> sloppiness in the shaft alignment.
> Joe

Didn't our good friend Nolan run a dial indicator on the coupler and adjust
things until it ran pretty much true.  I seem to recall that.

Barry - N4BUQ