I'm afraid our experience has not been any different. We have had numerous delays and fixes before we brought it home. We still have several small items that need to be fixed. Most of the items are not necessarily related to the manufacturer but the secondary manufacturers that supply them. For instance, we needed a replacement washer from whirlpool.
The best advice is to take it all in stride. This is our second new motorhome and the first was no different. Once the repair list is taken care of things usually go well after that. Some people get lucky but don't count on it. The industry really doesn't have much in the way of quality control. The customers are essentially the quality control.
It's a sad truth but my opinion, for what it's worth, is to make your peace with the process. If you were to walk into a store and buy 40 to 50 different products for your house, a few of them would probably need to be replaced or repaired.
Me, Wife, Son, and two giant Malamutes!
2013 Discovery 40G