Little update on this thread. I managed to bolt the passenger side back together over the weekend. The spring went in so much nicer. No clunking or "boing" noises when compressing it. I gave the car a little bounce and rolled it back and forth and it appears I have fixed the left to right ride height issue. Annoying thing is this didn't make much difference to my tyre clearance but at least one thing was fixed. I bought one of those cheap magnetic camber/castor gauges and decided to have a play around with it. Using my crude wheel pads and angle measuring device (read garbo bags and protractor!) I had the driver side with what I thought might be OK clearance of just over 5mm to the front lip. Measured camber at -1° castor at +1.5°. I mucked around for ages until I got the passenger side close to this at camber -0.75°, castor +1.25°. Unfortunately this gave me less than 5mm clearance to the front lip, which I know with a bit of loading on the bushes etc, this will end up fouling. So I am kind of back to square one, and I am realising now that I need a serious change in front end geometry to otherwise make this work.
My options are:
1. Give up and go for a smaller tyre size.
2. Modify the front lip.
3. Limit full lock with a plate off the lower arm. Has anyone done this before?