My initial thought is that perhaps the mounting for the slides isn't perfectly square in the cabinet
Could be your cause since slides are not sticky alone and it is sticking when sliding fully in and not out @ full extension.
My initial thought is that perhaps the mounting for the slides isn't perfectly square in the cabinet
it looks pretty good when I measure it.
hard to measure this spacing accurately now, tape measure won't work.
Without large inside calipers I suggest using a gauge block. Make it exact fit at front of one slide to check spacing everywhere else. Should also be tight at back, front and back of other slider
But are sides of cabinet parallel? Maybe you did everything right and original cabinet is the villain!
I've also noticed that because of the width of the drawer, any sort of twisting exacerbates the issue
That is normal but drawer maybe too narrow by small amount, or cabinet box sides are not parallel.
Answer from Volfram K on Stack ExchangeHelp with jammed ball bearing drawer slide
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Had my kitchen cabinets painted, and they messed up one drawer to the point it can't go in all the way or come out. They're full extension slides, and one side moves normally while the other is stuck like this and will come out no further.
I can't access the tab on the jammed side to remove the drawer, and the drawer doesn't go in enough for me to unscrew the frame plate. Google and a search of the sub only tells me to use the tabs, which obviously I can't.
Does anyone have a suggestion on how I can get this thing out to replace the slides? Preferably without destroying the drawer...