Replacement Knobs

Any idea where I can get replacement controller knobs for a ur28m?

I am missing 3 of them.

Thanks!

ebay
Mouser

try searching for “potentiometer (fluted) knobs 6mm shaft”. can get them in plastic or aluminium (perhaps a different shape)

Pull one off and measure the diameter of shaft and check if it is round or a flattened D shape. If it is then you’ll probably want a D-shaft. Also measure the height and diameter of the knob.

Try a Steinberg dealer, it seems that is the only way. I tried to get a (1) knob for a ur44 contacted yammy/steinberg parts, got the part number, and ran into a dead end that wanted my dealer number.