I don't have a UDS, but I installed a brass (1/2" length) nipple (lamps accessory) piece with two brass knurls on my WSM 22.5. Drilled a hole 1/2" and everything fit very well. the parts came from Home depot in the Lamp repair area. I need a brass cap that will fit the piece.... The two probes of my Maverick ET732 fit well together, passing them in the hole one at a time......