On Thursday, January 6, 2005, at 04:54 PM, Russell Duffy wrote:

Did I also read that the factory PP housing doesn't use one of the through
 bolts?   >>

Tap the unused bolt hole in the rear iron for a pipe plug lest the floor
under the engine get wet when you try to fill it.

Lynn E. Hanover

I'll take that as a yes :-) 

Rusty (having a craving to bore a hole in a rotor housing)

Here you go Rusty. This pic is from the vintage rotary site. Jerry