Hello FPN repair gurus! I'm working on fixing up my first J with a sac tray. The old j-bar had rusted and broken. So I ground down the channel edges on a new j-bar, slip it into the barrel, install new section with sac. And the new j-bar can't be depressed. Apparently it's too long and it meets the section nibble. I've checked the depth to the end of the sac tray, and the depth of the installed j-bar, and it seems that it has gone fully to the back of the tray. I guess I can take the Dremel and saw off a bit of the j-bar. Is this usual to have to do this? Or should I have ordered smaller j-bars? I'm using 54mm j-bar. Thanks for advice! From what I've found searching, the j-bar goes within the sac tray, not behind it. And one result did seem to say they had to shorten the j-bar. Not sure if that's normal procedure though...