Roll bar is the peice of 'wire' that connects the two wishbones together. See in the picture between the two silver collets
http://supertinyrc.com/wp-content/pl...aycollars1.jpg
Camber link is the upper arm that connects the shock tower to the hubs. Moving the camber link in a hole on the hub should help you out.
http://www.beginningrc.com/img-rc/43...ension_arm.jpg
I generally don't really touch front toe tbh matey. More toe-out gives more steering in from what im lead to believe and opposite for toe-in.