Hi all, long time reader, first time writing... I’ve run into an issue with the Merc-o-Matic in my ’52 Mercury. Last fall, the transmission stopped shifting, and would occasionally slip while in reverse. Over the winter, I dropped it out and took it apart to try and identify the issue. I found lots of dirt and brass shards, so I cleaned everything very well and replaced all the seals, bands, clutches, and steels. No hard parts appeared to be broken or worn, and when it was reinstalled, reverse works great but still nothing shifts automatically. Does anyone have any idea what I may be missing?