Contacted the seller and he is going to exchange it .
Did see somewhere on the net about somone who put some thin metal shims on it to sought it out , but the head on my one twists slightly as well as moving back and forth .
Wasnt too bad at setting 1 , but at setting 3+ i could align the head so the blade was pretty even on either side but as soon as i let go of the head it would move a few mils (from the tension of the big spring in the middle i think , not the two wires) .
Just hope they are not all like this and i am being too picky , i know on my slim adjustable sometimes i had to help the blade be even , but only by a fraction.
Lee.