Bottom Rack drops into a hole between tub and open door...what is missing?

Dishwasher Repair
1

NOT A GIBSON… it is a GE model Dishwasher) My daughter just bought a house (built in 2006) when she pulls out the bottom rack the front rollers drop into a hole/gap between the dw tub and the dw open door rattling the dishes. What part is missing? I have a different model in my home and I can’t tell how the wheels are supposed to bridge the gap. Can you help?

2

Here is the parts breakdown
Replacement parts for General Electric GSD3900L00CC Dishwasher | AppliancePartsPros.com

Usually the each side of the rack has two rollers at the front.
The front roller then rests on the door before the rear roller comes off the tub rail.
Perhaps one of these is missing.
OR
Perhaps the rack is in the dishwasher backwards as the rear of the rack only has a single roller on each side.

3

Thanks so much denman for your reply…I checked and sure enough, the front of the rack only has 2 rollers! It is missing an additional set in front!! Can’t imagine who loses a set of rollers out of a dishwasher! Renters are rough! Thanks much!