I just came back from the shop that is working on my coupe, and what a difference the shims have made! My tail is now up in the air, and measures 76.5 inches to floor. More importantly, the sills are perfectly level. My previous measured height from tail to floor was 72". Hard to imagine, until you do the math, that a 7/16" shim could lift the tail that much. Thanks to all who wrote and suggested this fix. Now, the A&P is gonna check my magws, starter, and get it purring like a kitten. He is 85 yrs old, owns Nerling Aviation in Boyceville,Wisconsin and is doing a marvelous job!!!! I highly recommend him.He was an A&P, 25 yrs old when my 46 Coupe was born!!!....Thanks for all who have supported my project with this ole plane. Gary
