Sliding glass door rollers

A home owner from Florida says:
I need to replace at least 2, but would like to purchase 4.

Box stores don't have my size. My current rollers are unable to be adjusted with the screw and need to be replaced.

If tandem could work, might prefer that. My current door slants as one wheel is apparently too low and makes the door crooked and doesn't shut flush.

Can provide any more info. I'm giving up trying anyone else. It's you guys or new doors lol.
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Lauren from SWISCO responded:

Hello, thank you for posting,

Please start by reviewing the style and dimensions of the 81-007 roller assembly to see how it compares to your original. We recommend sticking with the one wheel style assembly as we cannot confirm if a double wheel with fit in the frame. Let us know how the 81-007 compares and if you have any additional questions.

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