I think that raising and lowering a rubber hose to blindly
service/verify the proper level in a power pack reservoir is really
goofy. Not sure if that's how yours works or not, but on the newer
models the hose was clipped to the side of the nose.

In the past, whenever I serviced an Aztruck pack, it would typically
vent some on it's first or second (or third) flight, but it never
appeared to be very much.

I guess I would keep an eye on it to make sure that it isn't still
venting, or if it does drip a little more, make sure that it stops
after it decides it's at the proper level.

TC