Aaaaaaaa..... External HV coils (solid state ign) have lighting coils under flywheel.
Do you have points ign or solid state?
I make a lighting coil kit for the H35/HS40/HS50/H40/H50 solid state ign engines. The stators for those do have some play back & forth when mounting. When installing (reinstalling) you have to adjust so that the stator does not hit any magnets.