I must say I've learned a lot in just reading the posts! As a newbie (about 1/2 hour in a junk filled old barn yard) I haven't had time to even sort out what all the differing sounds are telling me...I think I need to go somewhere with a LOT less targets to differentiate what is what!!! One comment....I'd love to see more HOW TO or tips etc for people like me who barely know which end of the machine to sweep with!!! (not quite that bad...but you get my drift!)