Is there a lower profile dust cap available so that my Rota Grid V wheel caps will fit or is hammer flatter or do without only option.

You can make the cap a lower profile with a rubber mallet or hammer in a pinch. That was the only way I could get my Rota Grids to fit the front, they only need to go in about 3/16th" to clear the cap and not touch the axle.

Thanks man will give it a shot when I get them delivered. Vendor posted they might not fit.