Rega Ania Cantilever Bent?

As a rule misalignment of the cantilever (i.e. any deviation from straight front and back) is a problem. A minor (i.e. less than 5 degrees from center) deviation is perhaps OK but anything beyond that is a definite problem, and even a minor deviation could be an issue if the coils at the the end of the cantilever have been displaced, instead of a bend in the cantilever itself without impacting the coils.

With few exceptions (e.g. Miyajima mono cartridges which can be pushed back into place) there's nothing you can do about it. If this was a new turntable you should immediately seek remedy from your supplier. If it was bought used you are out of luck and should replace the cartridge ASAP. 

OK, having seen the picture that seems to be within acceptable tolerances for an off center cantilever. of course whatever knocked the cantilever may have offset the coils to a greater degree but that seems unlikely

Are you sure you don't have an anti-skate problem? Or azimuth (unlikely with a Rega arm which doesn't offer azimuth adjustment). There could also be some sort of issue with the phono cable I suppose.

Do you have another cartridge you could swap in just to see if that takes care of the problem?

ps Nice photo by the way -- it's a bear to get these things head on!