I once dit that exact same thing. just be carefull to keep the drill straight.
and drill deep enough
afterwards I had worryes about the (metal falling off the drill) (dont know the english word)
![Hammer :hammer:](https://board.marlincrawler.com/Smileys/marlin/hammer.gif)
please tell me
![Undecided :-\](https://board.marlincrawler.com/Smileys/marlin/undecided.gif)
it should be better to try and clean that out of the engine. But I just started the engine up and dit not seem to have any trouble.