Anycubic Ace Pro Front Filament Roller replacement (experimental)

So I've had some issues with the Kobra S1 Combo, mainly due to using my own spools and homemade filament (too thin in places). But while investigating these issues, I noticed that the original front filament rollers are somewhat bad quality. Mostly the issue with the rollers is that they aren't centered which makes the spools roll somewhat bumpy. And this uneven motion might cause feeding issues in some cases when the feeder gear doesn't have enough grip for example.

So since I have some pro grade flexible filament (Extrudr TPU semi-soft) which can withstand temperatures up to 90C+, I made these replacement rollers which are round and centered.  How well they work? At least as well as the originals and I haven't had feeding issues for a while. Then again I haven't had that much print time with the so I'm considering these experimental still.

I printed these with 0.6mm nozzle, 2 perimeters, 15% infill, 0.2mm layers. I also randomized the z-seam to avoid a single seam which might cause issues. I had bit too much pressure advance so one set has ugly zits but due to seam randomization it doesn't seem to matter.

You'll need 2 of these per roller so 8 in total if you wish to replace them all. But I suggest checking how badly uncentered the original rollers actually are, on mine only one was almost centered and the rest were worse.

In addition the the printed parts you'll need a 3mm steel rod cut to ~82mm length. The printed parts should slide onto the rod. Mind the orientation, the small nub should be facing the bearing

OpenSCAD source: https://github.com/spegelius/3DModels/blob/master/PrinterParts/Anycubic/ACE_Pro/Filament_Roller_upgrade_remix.scad