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That coupler should work fine and is a bit less expensive. I have never been a big fan of set screws for motor couplers. I used to use them but they would get off center somehow if you really cranked them down over time. I do like that the set screws are bigger than the ones we used do use back in the day. I would get some spare bushings to keep on hand because they do loosen up over time and get bigger. I use thicker wall tubing for the stuffing tubes so they are wedged in there pretty tight. The rear bushings especially. I replace them periodically if they get too loose. You can drill them out pretty easily. Use a bit that gets progressively bigger in size. The bushing will spin out of there usually on the second size bit. You can then tap in a new one with some taps of a hammer. Happy racing!
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