The RS-1 may have been one of the first EOB models, It took awhile, as my foggy head remembers. I have Atlas 21 Century track. Center rail cleaning, and pick-up roller cleaning, was/were the first step(s). Eventually I had to clean the wheels/flanges to get good low speed control. My Atlas SW9's have (4) four roller, center rail, pick-up-s), a huge ++ (plus).
Somewhere buried in the technical section, of this forum, is the EOB, installation, and adjustment(s), from Train America Studios. (TAS). At one time TAS sold upgrade kits, and did speed control upgrades, at their shop, Youngstown, Ohio, when we were a lot younger.
Most common problem: A loose/mis-aligned, tach sensor board, a key part of the system.
Some where in the instruction manual: If you still have a Cab1 remote, you can turn the EOB off. Run conventional.
Have fun, Mike CT
Do a forum search for Atlas EOB. Or EOB installation.