Looking for Camelot sliding door wheels

A home owner from Denver, Colorado says:
I am looking for a Camelot sliding door wheel. This replacement worked accept they are concave stieal wheels. The wheels I need are flat rubber.
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Bob from SWISCO responded:

See our 81-156 Tandem Roller Assembly. Look it over and see if you think this could work for you. 

A home owner from Denver, Colorado says:
Sadly that won't work because it has concave wheels I need flat wheels.
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Bob from SWISCO responded:

Apologies for missing that. Unfortunately we don't carry the 81-156 with flat nylon wheels. One tandem roller that does have them is our 81-151, but the dimensions and style are too different for this to likely work. I do have an idea, though it's a bit of a longshot. You could remove the flat wheels out of the 81-151 and see if you can insert them into the correct roller assembly. You would need our 81-310 Roller Axle Repair Kit to attempt this. See the video below. I can't be sure it would work, but I'm not sure if you're going to be able to find the original assembly so this may be your best bet. Take a look and see what you think. 

81-151 : Tandem Patio Door Roller, Flat Nylon
Tandem Patio Door Roller, Flat Nylon
81-151
$11.80
VIEW >
81-156 : Patio Roller Assembly, Tandem 1-1/4
Patio Roller Assembly, Tandem 1-1/4" Steel BB
81-156
$14.67
VIEW >
81-310 : Roller Axle Repair Kit
Roller Axle Repair Kit
81-310
$4.76
VIEW >
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