Fixing the Robocop spinner.
I was watching a youtube video with Jack Danger playing Robocop and he was having problems with the spinner. So I got to paying attention and saw my spinner was not acting so hot, either.
I had to tweak the pivot rods to get the spinner rebalanced but there was still another problem to deal with.
The first part of the problem is that spinners come in one-size-fits-all. Other than the offset pivot rod used on the spinner in Stern's classic Nine Ball pin, I believe all other spinners have pivot rods bent and formed to the same dimensions. And what you run into is that the spinner is not centered in its chute.
Look at the Robo spinner. See how it is not centered in the spinner chute. It sort of hangs over to the left. If is offset but it spins. And that is all Data East was looking for. This offset, by itself is not a problem as long as you are not anal about everything needing to be symmetrical.
The problem is on the backside. My spinner was having some interference issues with the play field plastic. The corner of the plastic was in the way of spinner movement. If you use your imagination, you can see where the plastic would interfere with the spin.
I just reached for my wire cutters and clipped of a small corner of the offending plastic. With this small bit of surgery completed, along with rebalancing the spinner, I am getting some great spinner rips. At 3000 a spin, the points really add up.
You might want to have a close look at your Robocop spinner and plastic.