This is my 2+2 Dirty Birdy that I had started a while back as my re-enrty into the hobby. The problem is, I had built in a slight twist into the fuselage during construction. I thought you might want to see it before I throw it in the dumpster here shortly.

I used several 1/4" ply plates in the wings and nose to mount the retracts. I think Bridi was intending the builder to imagine his own installation based on their own experience.