When my head was machined I wanted to go through the O-ring grooves and have fire rings cut. Somewhere along the way a misunderstanding led to me getting my head with the O-ring grooves cut out smooth, no fire rings just a smooth deck. The shop said the head couldnt be machined anymore due to its at its tolerances. Can I still get my head fire-ringed or should I find a new head. Some shops told me to get a multi-layer steel gasket and not get rings cut in it. I searched and couldnt find any help, thanks for the input.