All i do is try and try

[captainmoody]

I look at it this way, If the tube is old and might have shorts or low emission why rig it? If you want a lasting repair get it rebuilt or replace it with a good used one.
There are several ways to keep them going as Chad said but if you are going to use it everyday then it must be replaced and any other problems repaired to be an everyday set.
Otherwise, If you only want to use it every now or then go ahead and do what you can to make it work for now.
I hate those bakelite caps as they almost always come loose with heat and age. The less they are touched the better as those brittle wires love to break!
I used to pour some epoxy in there to strengthen it up but never would bother with removing, glueing and reattaching it due to the wire problem.
Most of the ones I got that had loose caps already had a crappy tube and needed replacing anyway.
If you need a tube type color set that works already and aren't too far away I can fix you up with a 1967 or 1968 Zenith for free.