Ok, it works great with the pot based spinners, the pots on mine need to be replaced, but the interface hooks them up very well.
If you are using a pot with a long range for a paddle then you are going to want to calibrate it on the control panel using less than the full range. I used half the range when I calibrated mine and it worked great, if I used the whole range then it was too long of a turn to move the paddle from left to right.
It looks like all the paddle games get the analog sensitivity set at 100 percent using this method.
Note, this only works for true paddle games, Avalanche, Bomb Bee, Gee Bee, Cutie Q, Warlords, Super Breakout, and 270 driving games. It isn't worth a damn in Arkanoid or Tempest.