Hey Jim! Good eye! That's a mistake, it should only be a double flag (16th notes). I've contacted our transcriber and we should have that fixed very soon.

As for 1/32 notes, yes they do exist!! Although they are not as common, you're more likely to find them in songs that have a slower tempo, and contain fast flourishes.

Anyways, thanks so much for catching that one! Keep rockin'!

Mike