replacement parts? pitch wheel, encoder knob

Hi all, long time moog user here, ive had my phatty since about the time they were first released and ive finally run into a snag w my unit. my pitch wheel is ‘breaking’ and i have one broken encoder knob that just flips out when i touch it (heavy object fell against the knob)…i am looking to replace these parts. seeing ive had this unit for many years, is there anywhere i can go to buy the spare parts? im solder friendly and would just need some direction acquiring the parts. Thank you.

No one? Any help is greatly appreciated!