I have an Argus C44 in which the focusing wheel gummed up solid tight. I took some Isopropyl alcohol to it and it loosened right up but it got in the rangefinder and now the rangefinding spot is basically gone. I think I can still see something moving as I focus but it is so faint that a small black square of tape over the main viewfinder window (over where the spot would be) still doesn't reveal enough movement to do anything.

Am I up the creek or is there a way to restore it?