OK, I need some help on this one. Bascially we've got this guy who sometimes helps us out with moving equipment, but he's not actually a member of the band. Anyway, over the last few weeks he's begun getting in the way a lot. He's one of those types who seems to have an answer to everything, and when our band is discussing stuff, he'll butt in with smart-alec stuff. He also seems to think he knows better than the band members, setting up kit the way 'he thinks it should be done' and so he's getting me annoyed as much as anyone. Has anyone got any suggestion as to how to deal with this? I've already warned him several times and yet he continues.