These have the hollow square adjuster hole, when I melted that wax it probably blobbed up underneath. Then while attempting to cycle the slug through its full range I broke it... It'll be a while till I can get back to it, I replaced that can with one from another road talker and I did have adjustable voltage there with the old TR701 and extra cap a the base, so I'm not touching that again until I know I got this other half squared away...lol
My main issue is getting the circuit board out of the can so I can access the traces on the bottom, when I installed the new TR701, I "temporarily" put it on the old legs of the other transistor.