I think I now see why the tank was shifted. It has a bit of a leak on the front plate on the lower right, so I assume that shift was done to insure the water dripped over the base (and not inside it). I am pondering if I should try and fix it but I may end up opening a can of worms. My 90 had the same problem and it's very touchy as the sight glass fittings are sweated into the tank.
I wonder if superglue could help here - I hear members talk about superglue a lot.... thoughts?