Thanks for pointing me in the right direction. Using the pictures in that thread, I was able to strip down the takeup spool fork assembly, clean it and re tension it. Unfortunately, the spacing is still out. I need to reduce the pressure on the spring to allow the fork to slip a little but too little tension and the screw starts to work loose.
I think I'm probably asking too much of an old model to give perfect spacing like a modern camera. As long as I don't get overlapping frames, I'll just live with it. Thanks again.