You’re using examples of mass market products that have a huge infratructure behind them. Regulators are low volume products and therefore I think you are compairing apples to oranges and not apples to apples. Also remember that regulator servicing is done as a sideline by a LDS and not a "day to day" activity. I agree with you it should be quicker, however I take the position that I’ll plan to get my regulators serviced when i know I’ve a period when I’m not going to be diving. For me that means the times when I’m traveling for the company I work for. Another thought to help improve the turn around time (and I don’t know your situation). You need to be seen by the LDS, where you get your regulators serviced, as a loyal customer. This may help you get your regulators serviced quicker as a thank you for being loyal to them.