Dead battery, again ... locating parasitic draw

[PARAGON]

Pete, a battery place can load test the battery, but your battery is not the problem.

Unless your truck has been sitting still for the 2 weeks, it didn't drain over that time. Your alternator should recharge it and if the battery has a bad cylinder it would not retain a charge for very long EVERY TIME. It sounds as though your problem is more intermittent which leads to some type of draw.

I had it and it was the rear air still cycling overnight while the truck was off. Relays can stick open periodically.

They are just trying to give you an excuse because they can't find one themselves, most likely.