I discovered that 3″ PVC pipe couplers are the same size as 4″ dust collector hose.
I cut a length of 3″ pipe, added a coupler and am using that rather than the large hood I had been using.
I think the pipe collects sanding dust better. Also, since the pipe is longer than the hood is, the stand can be farther back and out of the way. I was always bumping it with the banjo and had to walk around the lathe to move it around.
I added a pipe clamp where the two sections slide together to do the height adjustment, so it will stay at the correct height but can rotate. Now I can just swing the pipe out of the way without having to move the stand around.