You are not the first, nor last to to that. I did it (but with a #2 pencil) on my 95 Road king while changing cams and tensioners. Not to mention when mice filled my Rinehart mufflers with deer corn from then feeder. No damage, except that it scared the sh-t out me when I cranked it up and sand blasted the garage wall with deer corn!
I can’t tell you how many times I’ve dropped the wing nut inside my Carter AFB’s Carburetor…And as far as Corn/Acorns and seed that’s a given with my ATV’s after sitting a while in the pole barn…I had to start spreading moth balls all around the machines to keep the rodents away..