Adjustable top mounts wildly different L to R

Not too unusual for the strut tops to be different at the top, provided the camber is dialled in correctly I wouldn't worry about it.
 
As for cutting the guards, it is not unusual to have to trim the of the arch lip as they will catch depending on height and offset, even if only in reverse and full lock.
 
Cant help you with the lock to lock, someone more knowledgeable than me will help you out I'm sure.
 
Shaun
 
 

Not unusual at all.  In fact it shows the value of adjustable tops compared to the standard non adjustable tops.  At least you can get your alignment right now.
My MK2 RS and MK1 are both like this.  Both cars have been hit in the front and repaired earlier in their lives.

Thanks for the responses guys. You're right Shaun, going forwards I had no rubbing/clearance issues, it's only when reversing full lock into the driveway at home that it sounded like I was ripping the sway bar off its mounts! I rang them about it and they said drop it off and they'll sort the steering rack out. And thanks RS 2000 it didn't even click about the strut top bolts, they did replace those bolts but I just assumed they would have used something high quality. I'll definitely be asking about them and having them swap them over if they aren't grade 8 or better, I'd certainly hope considering how much this place charge and the good referrals I got about them that they'd be aeronautical spec!
 
The car must have been in a bit of a shunt on the left side, it's interesting/aggravating finding out the unknown past of the car and the dodgy repairs that were done that I now have to fix. If I was to try and get the top mount settings to be more 'equal' how would I go about doing it? The wings have to come off to cut out and replace the rusty splash panels, would I get them to 'straighten up' the top mount when they do that? The problems we've found (so far) are one side was running double spacers while the other only 1 and different length control arms left and right (now replaced with new matching pair). Looking on the bright side at least I'm learning something about suspension I wouldn't otherwise have known. I've included some pictures if anyone can see anything out of the blue, the threads on the tie rods are showing different and you can see the boot in more compressed on one side than the other. I don't want to fix around problems, I'd rather do it properly the first time and fix the root cause.
 
When I drop it off I'll ask them about the strut top bolts and to check the gap between the tyre and strut leg (thanks Marty). Anything else I should ask/get checked? Hopefully I can get this sorted and move onto more expensive, more complicated things that need doing.
 
Trent