I had a UAT leak from the aluminum fitting inside the center cap, only after refueling and only after the nose of the aircraft elevated over 20 degrees. My first occult UAT leak in over 30 UAT's I've owned.

I found this after 2 consecutive flame outs. This ultimately cost me my airplane. [:@]

Harley, I helped a local guy install his brand new UAT that he got from Tam and the instructions actually said it was ok to mount it vertically??? [X(]

I know many, MANY people have had success with a vertically mounted UAT, but the instructions CLEARLY stated the slant in the UAT was the preferable method.

Raf