Early on in production there was an engine which had the pulley come off and smash through the front cover.
Does anybody remember seeing this? It may have been on a factory visit, it may have been a photo on TM. That's all I remember, but it made a mess.
There were a handful with this around 2015/16 where the crankshaft pulley bolt unwound and broke through the cam cover.
S&S came out with a modified mounting bolt which cured the problem.