Bought one of those $45 dripless caulk guns from the supply house in Nashville, thought it was the answer to my crown molding problems. First ten feet it worked great, then the plunger slipped and shot a bead across a window trim like a Jackson Pollock painting. Had to scrape it off with a 5-in-1 and redo the whole seam, wasted about 2 hours and a tube of Big Stretch. Anyone else find those pro models fail right when you trust them, or am I just cursed with bad luck?