I was thinking of making 2 stands using large screws because the car stands doesn't have fine height adjustment .I’ve moved some really heavy stuff up homemade ramps too. One trick I do just for safe is place small jack stands under the middle of the ramps. Just gives a little extra.... just in case. I’ve even used wooded 4 x4 cribs under the ramps in a pinch. I just don’t want to have a ramp crack up in the middle with a 1000 pound machine on them .
I was worried about that also. I drove very slow around corners. The lathe is strapped down to anchors that are bolted to the lift and then welded down to the frame below.I would have be afraid that any corner I took would twist off the bed!