I sold all my esk8s 
They hold up just fine as long as you don’t crank down too hard on them. I like to use a 0.5mm speed ring on either side of them as well.
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A proper shim set between the bearings I think fixed it! Now when I tighten down the axle nut it does not affect the spin of the wheel. I had to build a custom shim set for each wheel as the tolerances were between 10.2mm and 10.5mm.
1) I used a bolt and some washers to create a bearing press that would put the force on the outer race of the bearing so I could really crank on the bearing to make sure it was fully seated before taking measurements. The inner bearings hollow wheels are tight
2) Then used a washer from the outer bearing location to measure the bearing spacer (shim) needed
13.43mm - 3.09mm washer used for measuring = 10.34mm bearing spacer needed
3) I used a 10mm wide x 10mm I.D. x 16mm O.D 18-8 stainless spacer, a 0.3mm, and a 0.1mm shim to create a 10.4mm bearing spacer
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I hope to be getting some new 10mm x 22 x 7 fasteddy bearings and proper width spacers in some Sixshooters Soon.
Proper width yet to be determined.
Found this thread very helpful
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Is there any evidence that these are any better at longevity than standard 6900-2RS bearings?
I can’t answer that question.
I got these bearings so I could use psychotiller’s sixshooters and the 6x2 tires on 10mm axles.
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Ive blown up multiple regular 10x22x6 bearings, to the point of melting the metal cages.
Ive yet to kill a fasteddy bearing.
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I cut apart some noisy bearings, and some perfectly fine, for the 10mm ID race so I could run my fast eddy’s in my sixshooters on 10mm axles, using the races as exterior spacers as the axle is too long otherwise.
These spacers were too thin be used as interior bearing spacers, by at least 2mm, so I kept axle nut torque low and only very light carving/turns on the test drives.
I’d prefer one bearing spacer of the proper width, but ordered a bunch of 0.1, 0.2, and.0.5mm 10x14mm Stainless steel shims, and will sacrifice two more bearings for their interior races.
Be glad I’m not stacking 6 copper crush washers
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Amazon also has a pretty good selection of spacers. Search for m10 spacers.
Also search for m10 shim. There are packs of shims with 0.1, 0.2, 0.3 and 0.5mm included for around $10. Makes fine tuning spacers easier.
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I actually just buy slightly oversized from aluminumspacers and then throw them on a drill (or more recently, my lathe) and sand them down to exact length that i need, measured with calipers. Much more elegant than stacking shims.
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Funny you mentioned that. I just ordered some 24mm long spacers this morning. I will also be shaving them down. In the vast majority of cases, you need a spacer that is slightly wider than what is specified.
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I end up 3d printing test pieces until i find the appropriate length and then shaving down to the exact size. Best way to get exact to size spacers every time. Just takes a bit more effort.
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