OT:
The reinforced drive belts are so much better the original ones. May not make any difference in performance, but in less maintenance.
Donīt stretch out as easy.
Iīve used the same pulleys and belts all season.
I agree that the HL cylinders are a luxury item. Probably the bearings too.
I have not compared the 501X arms and 511 (high traction) arms.
Maybe the db01 "standard" plastic arms are just as good if you want more flex?
On the other hand, the drive belts and arms are not so expensive.
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