are you trying to catch it with the parts catcher or grab it with the sub.
are you feeding to a stop or pulling the bar
i used to drop my remnanats, now just leave the last part on the bar after it cost me 1200 bucks for a new window because the bar was cut 1/4 inch long
if you just want to get the remnant in the catcher you can slide the catcher closer to the main and reset the b position for your parts ejector cycle. to get the catche up throw an m73 before your m482 in your bar change program