Hello David Gladwin,
No problem here...., and I don't disagree with your mounting comments. I do suggest that if you are having flameouts with a properly used UAT, that you look at the rest of your system... Flameouts for most of us simply never happen....
I NEVER had one in my Bobcat, Bandit, or F-16.... which were equipped with UAT's... (the F-16 has flamed out on the ground when I forgot to purge the UAT).

I would always point the nose up on a new model.... for a lot of reasons.... and always purge the UAT if it has been emptied, and is mounted near horizontal.

Regards, David