I have never used one but I had a customer who was interested in one so I called Mark at Paragon Machine Works and after talking about it we both agreed it wasn't an advantage in this particular situation. I am not sure what the issues were because it has been a while but I believe you need a special tool that wasn't very cheap and I think there may have been some issue with the type of crank you use, not exactly sure but it wasn't worth it for one frame. It may work for your situation. I probably didn't help you much so a couple more opinions wouldn't hurt. Good luck.