Folks at ZWO, I just got the new EAF Pro and got curious what the requirement was to change the axis diameter from the old 5mm to 4mm. 4mm is a very unfortunate size since it is not so widely used and it is hard to get right pulleys, vor example. If you wanted to change just for the sake of a change, then 3.175mm would be better since it is widely used in RC modells.
Please next time you do product upgrades please think of such details. Your products has build a certain ecosystem and it is important also for you to have this ecosystem aspect in your minds.
