Thanks for the suggestions everyone. I decided against the DIY approach and I wanted a threaded clamp, so bought VPI's stainless steel/Delrin clamp. Took about 2 days to arrive via UPS from E.D. This one is a lot sturdier than the delrin only clamp and the threads are made out of steel, so I shouldn't have this problems again (hopefully). The stainless steel/delrin clamp is also much heavier than the original delrin clamp. Based on my initial impressions and as orthobiz suggested, any difference acoustically between the two clamps is minimal.