Back stop adapter for a WorkHorse Sabre

Greetings all - I just got my Workhorse Sabre installed and was wanting to use the tri-lock system that I have with it - the ARM BLOCK (yellow in pic) that is used as a stopper is too short for the pallet to hit as I am adjusting the location - does anyone have a quick solution - I guess I could get someone to weld aluminum to the block where it reaches to touch point but wasn't sure if they had some after-market part I didn't know about...

Thanks for all the past (and future) feedback and help....

Pics attached for reference