Try using a 'Snake' type setup. Attach(weld) a self tapping screw of appropriate diameter to the end of a small rod, say .125, .1875, .25, whatever fits. Then put that in a hand drill and ream away.
Don't forget to grind off the head of the screw to make it small enough to get in the tube.
Conrad W Peden
72 L20E in rusto. + 1 dent
73 L20E in resto. soon to be raced-o
http://members.rennlist.com/a914lover
[This message has been edited by Conrad W Peden (edited 05-11-2000).]