I was prepping my E4 last night in an attempt to run it for the 1st time this weekend and noticed that the bar where the sway bars slot into seems to move at one side, which in turn makes one side of the sway bar more responsive than the other and therefore stiffer which must effect the handling. Is this normal? or if not how have you guy's fixed the problem.

It does this at both ends, it's the bar mounted to the bulkheads. From looking at it it will make cornering one way different to the other.

Cheers
Aaron