The flipper bat(plastic)on my HS2 physically cracked so I got a replacment which has a taper (on the very last 1mm of the shaft which doesn't contact anything) and doesn't drop right into the clamp (requires force to seat all the way) like the now broken shaft did even though they have the same diameter when I measure them with my digital mic.
Once seated it won't spring back to its resting position because it looks like its not in alignment with the coil shaft.
Did I get the wrong flipper or am I not doing the install correctly?