In article .com, Tony wrote:
have been in the owner's manual that said something like "switch to
most full fuel tank" before takeoff, and after run-up. That's the worst
possible time to change tanks.

Ack. Have to agree with you, but I think you misread the instructions.
I start and taxi on one tank, then run up on the other with takeoff on
the same tank as the runup. That way, you know you have good fuel in
both tanks.


Morris