[dlog]

Well it sounds like they did all they could do, maybe besides checking the cylinders for moister. But if you have any air in the system it will overheat no doubt. I experience this first hand. Follow Bear's Link and Don Technique will get all the air out of the system. I know it help me out a lot. Make sure to add it to your favorites, because you may have to visit for something else.

If you continue to overheat, continue to bleed the air if any present, and if the air doesn't go away chances are its a small blown headgasket.