[SOLVED] Replacement Rotary Knobs for DJM 750

Hello, I was just curious if it was possible to replace the grey djm 750 knobs with black knobs of the djm 850/900. And if so, where can they be purchased.

I remember reading not all djms use the same knobs.. and i'd like to avoid purchasing some and being sad they don't fit or don't align the same.

Thank in advance