Come on guys. We can be more creative that this! We are the best at
this sort of thing, right? How about inserting a pin or wire coat
hanger through the TE hole to act as a temporary guide for the tubing
on the inside. You could push a video camera down the fuselage near
the hole so you could see what you were doing on a monitor. How about
a little hair spray inside the end of the Tygon tubing to lube it up
and then lock it in place when it drys? Bicycle shops use this
technique to put grips on handle bars. Instead of a coat hangar
through the TE hole, how about something that could temporarily expand
on the inside and grab the inside of the tygon. Something like a
small molly bolt? Or one of those 4 pronged picker-uppers. Or make
something out of small brass tubing from the hobby shop that flairs
the end when you pull a wire through the middle. Then you could pull
the tubing over the inside nipple from the outside by pulling on the
molly bolt or whatever. How about suction on the outside TE tube to
help grab the tygon when it gets close to the inside nipple with the
long pole you made out of lightweight PVC pipe. Or just get a string
through the TE probe hole, then thread the string all the way down the
Tygon, then just pull into place. You should be able to apply lots of
force by pulling on the string through the TE hole if you tie the
string off on the cockpit side to the end of the tubing. I like this
last idea best, but I bet this list can come up with 10 better ones.

Matt