I'll throw this at you, perhaps someone might know the answer.
I need a battery cover/door for a Hasselblad 500ELM. The little plastic knob that locks it in place has cracked and the door won't stay on. I know, I know... Duck tape. But I would really love to have the door with an original part.
Update: I contacted David this morning (Sunday) and he replied back. He has the part, I will purchase it from him and will also install it for me (free of charge) if I ship the battery door to him. Glad to see true and tried professionals are still out there.