Ten Speed Rear Derailleur Issue
I'm pretty new to working on ten speeds. Forgive me if my question is stupid.
I've been cleaning up a very nice but incredibly dirty 1974 Raleigh Sprite. It has cleaned up beautifully and I have lubricated it appropriately but I have one remaining issue.
When I change gears, the rear derailleur returns to the outside or low gear position. It moves fairly well but wants to return to the original position. The gear lever instantly returns to the upright position.
Can anyone help me identify the cause of the problem and provide a solution?
Thanks in advance.