Hi Paul-

Recevied the back plate for the slide throttle.  I see now what you
meant about being 90-egrees out of rotation.

Is there any reason I can't simply drill new holes into the pport
flanges that align with the existing plate holes?  A quick eyeball shows
they will be roughly evenly spaced between the existing holes in the
flanges.  Seems a lot easier than making a new plate, or drilling new
holes in the plate & then sealing the old ones.

mrs

That will work. Six holes are over kill. Doc's new slide throttle
has only has four. Don't forget to seal it with the gasket material.