I have an SL10 and a bunch of fittings that come in as 3/8 NPT and I need to rethread them to 3/8 NPS. Whats the best way to go about this? I have just put them in a round collet and just recut the threads but its pretty ugly and the threads are miserable. Only other idea I could think of would be to use a hex collet and line the threads up but I didn't know if you could make the spindle stop in the same place each time? Well any thoughts would be helpful, thanks for your time - James