I thought I had posted the fix I worked out for the rather poor DC on the Ridgid oscillating belt/spindle sander but am not finding it just yet. At any rate, it did help but I still wasn't getting a lot of the finer stuff that clouds the air when doing a lot of sanding (yes, I wear a respirator).
I relocated the sander in anticipation of some reorganization and rigged a hookup into my cyclone as it was nearby and the vac had to stay behind to service the DPs and the smaller BS. It now quick-connects to the same multi-use arm that serves my overarm TS hood and my router fence. Definitely a further improvement over the shop vac.