Hey guys,

So I was thinking about buying the MD-4 motor drive for my Nikon F3 for infrequent use and mostly for a bit of fun occasionally (sometimes it's just fun to wield a big, loud 35mm camera) I saw that on KEH right now they have an EX grade MD4 and a BGN grade one. I've purchased BGN grade before from them and I've never really been disappointed, but I'm wondering if there would be any mechanical issues potentially?

Just wanted to hear your thoughts.