Yes - Des Moines, IA
I found your post and thought I would reply (You already know this by now).
Jim Delveau in Des Moines (Ankeny actually - IKV) offers transition training in his RV6 and also has access to a 7A for tri-gear training.
He can be reached at jdelveau at msn dot com.
RV-10 tail kit 50%
(When do I get to measure something?)
"Flying north of the Arctic Circle and back - several thousand dollars,
Doing it in an RV you built yourself - PRICELESS!"