good point there bruce, don't glue the screws into the rail pull them out first, then your definatly going to replace it after having to rip out the screws.

for me I really don't like using the ball joint connectors for control surfaces there is alot of room to fail, like having the ball vibrate loose, or the nylon loosening up and poping off under load. I am starting to notice quite a bit of wear on some of mine rather quickly.
for a single flap servo,throttle, or a stearable tail wheel linkage there great, and guys have been flying the P-47 with the set up for years but I just don't have alot of faith in the long term durability for critical high use areas like ailerons/control surfaces.
I am sure it will be fine but I would keep a close eye on it for any wear that could cause it to fail