Looking at the installation tech tips, the SumoSprings Rebel Helper Springs # SSF-173-40-2 comes with a complete bracket and bump stop replacement kit. It is entirely possible that there is still some factory hardware on your 2016 Jayco Precept with a Ford F53 chassis that is blocking the installation of the 512107 lower bracket hook. It is important to note that you need to remove the factory bump stops and corresponding brackets in order to install the # SSF-173-40-2.
It is also a possibility... view full answer...