Hi. A few months back, last year actually, I researched the power drill needed for raising the roof of a Pop up. I bought a 19.5 Craftsman that was supposed to do the job, but it doesn't. Fortunately I got the extended warrantee so I can take it back and trade up, but I am unsure as to what model to get. I have a 12 foot Coleman Tacoma. Obviously the suggested drill was for a smaller and less heavy top. What drill do you think I should get to raise that top?