Cant say I am over the moon about it either, but it works great.
Yes - it is a bit strange. I was wondering if they are the correct coils ?
What really worries me with these mods (and high tapping transformers), is that all the moving parts become more powerful, but the plastics do not become stronger ! The only reason I can think of making a flipper mod - the wrong coils, or the previous owner wanted stronger flippers. I would have tried rebuilding the flippers first !