I did an air filter change on my 09 today and it took 4 hours. No matter how I try to speed things up I always get caught with little things that seem to take an inordinate amount of time like getting the air ducts in place or alignment issues. Coupled with the cleaning that I do since I have the seat and shelter off, I seem stuck at 4 hours and if I were a shop charging $70 bucks and hour I would have to charge $280 which wouldn't make for many return customers. Some guys on here claim 1 hour and I think that is amazing. Well, at least it started and ran fine with no lost parts, screws or redo's.