Quoted from stoptap:I fiddled with the spinner today. I put a couple of small washers behind the switch to move it away from the bend in the spinner actuator a tad. I then bent the switch leaf so that the switch actuated with the minimum possible pressure. Finally I put a tiny drop of very light sewing machine oil on each pivot point of the spinner.
The difference is amazing. The spinner spins for ages after the ball is shot through it and the Ring shot is now a lot easier to hit.