Ok, so with one big washer between the engine mount and the firewall, I should have a good 1/2-1 degree of downthrust. I am certain it is probably at least 1 degree, because you can really see the angle with the naked eye. The backplate of the spinner has dropped about 1/8" from centerline, so I'll give that a try. Unless you all have a better idea? Thanks.

Patriot

P.S. BTW, I named my cat "Campy", named after bicycle components..."Campagnolo".