Deerhead super plate question
 

I bought bike with this derailleur and the derailleur is in great condition, except the return is quite slow. I took it apart last night, cleaned and greased it, but I’m wondering which hole the spring needs to be in. There are three holes where the return spring can sit in, and I’m curious which hole is the best option. I would assume they are for more or less tension.

Or should I put it on the shelf and grab an old Suntour RD?

Three holes for the return spring?

It sounds like the cage pivot spring might be what you mean(?), or do you really mean the spring that resists the shift lever?

The choice of holes for either the B-pivot spring or the Cage pivot spring are the adjustment that can be made to adjust the position of the top pulley, to match the size of your chosen freewheel, and which can affect shifting response (a smaller "chain gap" gives a more responsive action at the lever).

I played around with this nut/bolt thingy on the backside of the upper jockey wheel and it seems to work much better. Apologies for my lack of technical jargon.
https://cimg8.ibsrv.net/gimg/bikefor...d221e113a8.jpg