Thank you all. It ended up working better than expected. The casters were kingpinless rated at 2000#. Since the casters were not under the load, I used the ratchet straps to keep the long bars from deflecting too much towards the floor. The heaviest machine was about 3300#. It took a couple days to figure out and build. I realize that we are all spread out but if anyone needs to use it, I will be more than happy to assist. Max machinery width on the narrow end 26"