It's a high rpm circle track 360. when you see the pic I am committed to where I am at. I am going to set the depth (probable 1/8") & weld it then reinstall the screen into the circular slit & tamp it down to crimp it in place. Thank you for (most ) of the replies. I'd like to weld 3 or 4 nuts of the right thickness on the bottom of the pickup to set the clearance exactly where I want it plus have everything supported.