try losing the screws and pull the to end plates together and tighten the two screws. 73 Wd8ajy
TNX for the information there WD8AJY. The tuning shaft looks to have a tension adjustment on the very back of the shaft that uses the end mounting tab, threaded rod and nut to get the desired tension needed. The exciter adjustment was never very good anyway, so it will now be taken care of, I hope.
You would have to have very large hands to be able to squeeze the mounting ears of the shaft together and still tighten the screws down, that hold everything in place. These screws were torqued down fairly well, now I can see why. http://i1241.photobucket.com/albums/gg505/w5inc/Collins002.jpg
There is a ball bearing setup on the front end of the tuning shaft. Nice touch by the Collins factory to allow smooth tuning of the exciter. The ball bearings look to ride on a "bearing race" created by the front mounting tab. This is where the correct tension on the tuning shaft comes into play. The bearings have to be in the "race" created by the front mounting tab in order for the tuning shaft work properly, I am thinking. http://i1241.photobucket.com/albums/gg505/w5inc/Collins001.jpg