So, I finally put some of the yellow dot pop coils in a game for an experiment. Chose a Gottlieb 70's game as 60's games seem to have faster pop bumpers for some reason. So, El Dorado has them in.
They really do make a difference - the bumper is way more reactive. Game seems way more lively. Doesn't really make the game easier or harder.
I can think of a few games that might be fun to try these in. As ever it's a matter of experimenting with individual games and seeing if it works. Purists I doubt will like them.
I had yellow dot flipper coils in a game - took them out, went to orange and might go back to regular. Just want each game to be fun and challenging so lots of tinkering needed!