I'm not clear on the restoration status of this set. Did the previous owner do some minimal "make it work" repair years ago? Did he do a full restoration? Something in between?
If the original electrolytics have not been replaced -- or at least checked! -- I would not feel safe running this set for prolonged periods.
Forget alignment for the moment. TVs don't un-align themselves by sitting around. Install a full set of tube shields and see if they help.
Phil Nelson
Phil's Old Radios
http://antiqueradio.org/index.html