Mando,
Mine is out about the same on the inner guards but is not a real problem.
I also have about 10mm difference with wheel alignment with guards from side to side. Didn't notice this until it was all painted and chassis all bolted up:CRY.
Real problem will be when I drill holes for front quick jacks as they wont be equidistant from the stripes so will be noticeable
We must be mindfull that we are talking about a fibreglass vehicle that had its mould taken from a hand beaten alumimium original so there will some discrepancies. Iam just estatic I own a Cobra lookalike.
Just be happy you have got one of the better chassis that are currently being made
Phil