There are various logics to having the Curvetines in the front or rear holes however they should certainly be consistent on RH and LH sides of the planter. Someone just made a mistake, probably two mechanics working on it. Joe likes the Curvetine in the front, I like it in the rear.

One thing you could do is to try it as it is, see which way you like it best and change the other side to match yourself. Using Timken tapered roller bearings as we do, the Curvetine installation is not a quick impact wrench job like the OEM rubber tires, but I think it is worth the effort at initial installation when you see the stand you get. jmho.

Jim at Dawn