Frigidaire electric stove bottom drawer parts

Oven Repair (including Ranges and Cooktops)
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1

I broke some of the plastic clips that hold the bottom drawer in place. I found the following part #s:
Drawer rear guide AP2121518
Drawer front guide AP2121517
My questions are:

  1. how many of each of the above guides are there on the stove total, is it one on each side of the stove, 2 front 2 rear, or are there any more?
  2. My drawer has 1 plastic fitting on each side of the drawer itself, in the front, are there supposed to be any in the back or does the back just glide over the guides on the stove itself?
    Thanks.