My 18" Rikon, is close to stock, but my 14" Delta clone, and HF special. I added the Carter de-tensioner, and sometimes use it. I think the biggest Carter add on was changing the crappy little knob that took a week to turn a few times, to a Carter tall tension knob, it makes changing tension a dream. I also have the small blade guide on it, and it's turned it from a metal block POS to a Ferrari. With a small blade, usually 1/8" or 3/16" it turns on itself. Makes a bandsaw box easy as pie. I blame Alex for all of them, he'd do a demo, and next I knew I was standing in line to buy one.