Quote Originally Posted by jmdaniel View Post
I'm not sure what "upgrade" you did to the center rails and chock, unless it was non-Kendon. I didn't do anything to mine, and it works fine, for both the B and my FJR.
I have a 2003 trailer. Around 2015 Kendon changed the design of the center rails and chock so that front tires would fit between the rails instead of slightly riding up on them. Also lowered the chock for easier in and out and made it adjustable for different wheel sizes. Upgrade is available on Kendon website and is a pretty straightforward installation. I paid about $200 a couple of years ago.