Suspension Setup

[SeriesLandy]

Hi guys,
I've been setting up my suspension for the past 2 nights and have hit a couple of problems.

I bought my rear camber adjusters from 3ge and I've found that they are no good. With them fully wound in (and a half nut for iva) they are giving me 3deg positive camber when I want 1deg negative.
I've thought about replacing the adjuster with a rose joint (like ashg has done) however I can only find one place and they only have 1 in stock.
I'm guessing I would also need a bush to reduce it from 20mm to 12mm. Can you get these off the shelf as I don't have a lathe.

The other problem I have is ride height. I loaded the car up with beer and have tried setting the rear height to 150mm but with lots of tension on the spring I got it too 140mm.

On the front, with no preload I could only get the height down to about 110mm (is this ok as its been mentioned 100mm).

Would I be better off taking up the slack on the front and not worrying about the slight difference in height?