ORIGINAL: DarZeelon
I don't know how you had managed to break that cap, but I believe it is better that you entrust this repair to a trained professional.
Engine mounted inverted, flying field has moles, moles make holes, landing gear doesn't like holes, landing broke, spark plug wire caught on something, spark plug cap broke. Lesson learned - pay higher dues and join a club with a paved field or find a field without moles.
I have done electronic repairs so I may just give it a try. I have ordered one of the new iginitions but it won't be in until December and there is still some good flying weather left in the season.
Thanks for the quick reply