Scale 1/8 buggy

[nativepaul]

It rained last night and ths morning so in an effort not to cake it with mud I put the road rages on and used it on tarmac, with the road rages it didnt handle anything like as well, I was geting a lot of understeer, when I brought it in I realised why.
The rear tyres are dirty all over so they have a big contact patch but the fronts have too much camber for the flater tyres so they are only making contact on the inside edges.

Looking from the front of the buggy if I put the spanner on to the top of the turnbuckle, do I need to pull it towards myself or push it away to lenngthen the arm? Is it the same direction for both sides or are they opposite threads?

If I lengthen the top arms to get the road rages sitting flat, how will this effect the handling with the off-road tyres?