Posted for Tubamanflies@aol.com:

 The 10 deg offset is in terms of engine rotation.  With both the rear and
 front bulkhead mounted the spinner mounts to the rear bulkhead fine.  To get
the
 front bulkhead to align with the original holes it somehow needs to rotate
 about 10 degs to line up.  The foward/aft spacing is just fine.  The only
option
 we can see is a rotation of the front propeller cap.
 
 Thanks for the input.
 
 Ray Gardner