Sliding Hatch, 1991 420

[Captian Scarlett]

I have a 1991 Sundancer 420. The sliding hatch between the salon and the front berth is off the track. I can slide it but lifting and pushing, but I would like to get the hatch back on the tracks. I've disassembled parts of the cedar closet to get access to the railing, but can see no way to get the sliders back onto the tracks. Any ideas?
Thanks in advance!