[Radioroslyn]

Oh you mean like this...

< New volume control in order I guess.
Would try cleaning the old one as it is control with a tap and switch. Might be a little hard to source these days. Mike was looking for one his 118 don't know if he found one. You can use one w/o a tap but it won't sound as good as you loose the loudness feature ( higher bass at lower volume levels)

Speaker issues: The center spider cone with 3 spider fingers isnt level. the spider fingers dip in towards the field coil a bit like 1/8 inch.
It maybe from the damage cone that you are repairing. If the cone isn't rubbing on the pole I wouldn't worry about it. If it's rubbing then shimming and or re centering w/ the screw in the center may work for you.

I saw that the the voice coil wires cross each other
Speaker shouldn't be an issue as you only have one speaker. If you had multi speakers then the phase relationship will make a slight difference.