Quoted from phil-lee:I appreciate the constructive comments.I see the 3 inch wedge heads and felt it would simply be an improvement Gottlieb would have made at the time had it been the norm,however there is not enough room on an older machine to make it viable. I have nothing against 2 inch and grew up playing those,and a machine like Fireball just wouldn't be right without them.The problem is I like a fast playing game and after rebuilding the flips on Spin a Card including yellow dot coils performance is still lacking, looks like High Tap is the next step. Actually a 2 1/2 inch flipper would be perfect but they don't make such a beast(that I am aware of). There is a lag in flipper performance I attribute to the contrived wire-reach system Gottlieb used to the switches, my next question is, is it difficult to change this to a direct-switching system akin to a Williams?
As far as Purist go I restored wooden runabouts from the 50's to Museum standards and understand the importance of originality.However after performing the work necessary to bring a pin to OEM performance there is no way I would sell it for some piddling amount, it will be kept and played hard. I won't ruin a machine but I will experiment to make improvements in performance.
It's oddly funny to me that you want to do this mod to a "Spin A Card". My very first pin ever was the add-a-ball version of that game called "Hearts and Spades". A previous owner, possibly an operator, made just such a "mod". They even moved the location of the bushing holes back a little so that there would be some gap between the flippers. The game was ridiculously easy.
I didn't keep it very long.
There's no good reason why a properly shopped and set up "Spin A Card" shouldn't play fast and snappy. Check your line voltage and also clean and adjust the switches on the tilt and game over relays which are in the circuit which powers the playfield.