Ball size for a Swift 145RB
Can someone with this model tell me if we need a 2" ball or 2 5/16" ball for our ball mount? I read the specs are supposed to be somewhere on the TT tongue but we bought ours used and although we measured it at 2" we want to be sure. Also when looking at balls for the mount there are different shaft lengths too...how is that number determined? I see 2 1/2', 2 5/8' and 2 5/8 with a 2" rise. This is more complicated than I thought. Thank you.