A friend of mine asked me to clock an AW4 adapter for him. The casting was made for it. All
the bosses were there, they just needed to be drilled. 10 degrees was about right.
A word of caution to anyone else who is going to do this - the bolt pattern is not an even 60 degrees
all the way around. I took my time and measured the original pattern before I center drilled the new
pattern becuase I wanted to be able to make drawings for future reference.. Transfer screws would be a lot faster for most people.