The big problem with import machines is that each tool is individually fitted, so depending on how high the worker was as to whether the holes were drilled up hill or down. As each was fitted, the dimensions could vary from machine to machine making interchangabilty almost impossible.
Also the factory will order a batch of an item and when it is used up, they order another batch, but no telling if it is from the same source or ?, it could be that company b undercut company a this time so they got the order and there are often changes to the machines from one serial number to the next. It is almost as bad as when the war effort was trying to crank out machine tools and using whatever they could to come up with something they could call a machine. The Frankenlathe was not uncommon, right out of the factory!
Also many of the older import machines came from Taiwan, but only the best companies survived the switch from Taiwan to China, so any machines that are from the older plants, well parts just ain't there no more, nor are often the specs and drawings.
Now we get to China, they were in such a hurry to crank out machines to sell, they did not care how good they were. It is often impossible for me to track down parts. I am dealing with a Chinese welder right now and the part does not show up on the parts list. And calls to the factory have so far been coming up empty handed. What is worse is that the client removed the part and it went missing, so all I have is a hole that a part fits to and no way to identify it.
When I was importing tools, the owner of the company would order our spare parts at the time we ordered the machines, hoping we got in enough to cover what was needed for the future and knowing full well that that may be the last time we would be able to get those parts. Also a few machines were set aside for "parts robbing"
Now Norm, I am glad you managed to find a part at Grizzly that fit. That is one company that seems to at least try to provide a level of customer service, and they have grown because of it.
Walter