Picked up a pair of forks at the scrapyard nearly a decade ago for $30, and finally got a tractor with a quick attach and enough lift capacity to make use of them, so I bought a frame and the forks won't fit - they are really close but too tight to slide across the frame. Looks like the frame dimensions I found on the internet are 16" between top and bottom plates, and mine are all of 16-3/16". What's the norm on other fork frames? I'm assuming I need to take some metal off of the frame, but I also want to make sure the forms aren't a little snug too.