Inconsistent M6 washers on Ultimaker Heated Bed Upgrade?

[amzeratul 0]

Hey all,

I've recently received my Heated Bed Upgrade for the original Ultimaker, and during the installation, I ran into an issue with the washers that go with the thumb screws underneath the springs. One of them looks exactly as described in the instructions (thick, with a rounded side), but the other two are thin and flat (see attached picture). I proceeded to build with those anyway, greasing and installing the flat ones on the front (with the single rounded one on the back).

I expect this to not be a biggie (haven't had time to do the firmware upgrade and testing), but is there anything I'm missing? Should I replace them with proper washers? If so, how would I go about getting those?

Thanks!

[neotko 1,392]

Don't use the flat ones. The curved it's to make the movement easier.

[amzeratul 0]

Thanks for the feedback. I've contacted my local (UK) reseller, and they're sending me replacement parts.