I'm curious if the 1st gen OEM shocks are shorter. The Koni's most likely have a shorter BodyThat is weird, though I have a 14' model, I'm lowered 3-1/4" and I don't have this issue. I have just installed Koni Yellows.
If you don't mind, could you measure the shock body on the OEM ? And maybe the Koni aswell if you can?