I bought a microShift long cage 7 speed rear derailleur that was in a non-descript box. It's just been in my spare parts bin for a while. I had forgotten about it until I tracked down how much I paid for my shifters in the above post. My Ultegra rear mech just didn't have the capacity for a triple crankset so I decided to dig up that microShift mech and put it on the bike. When I put in my AliExpress orders I always add a few trinkets for the bike. A couple of those were the anodized jockey wheels. I dug those out and put them on the microShift mech before I installed it. I was surprised that the mech didn't have any grease on the mech from the factory, and the OEM jockey wheels are bushing, not bearing. The Blue ones I put on have RS (rubber sealed) bearings, so a step up. I then put a liberal amount of Tri-Flow on all the pivot points.

I set the H and L limit screws, pulled the cable taut, clamped it down and it shifted perfectly first time. Not bad.

I can tell the blue on the wheels isn't going to last all that long .... oh well.