ependydad pretty much covered the shortcomings of interchangeability.
As an addition... the Rockwoods and the Flagstaffs come with the Reese REVOLUTION not the Sidewinder. While the same concept, the Revolution is manufactured specifically for Lippert and installed on the Rockwoods and Flagstaffs and is of a different pin box size. (as you've found out)
The Sidewinder is manufactured to be a replacement for typical sized pin boxes to allow for the rotating feature. Sidewinders can also be purchased with an "Airborne" head/plate which gives some cushioning, the Revolution cannot.
Right now the only 'cushioning' solution for Revolution owners is via the in-bed hitch. (of your choice)
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2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
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