We picked up a 313 in March and have been very pleased with it. As CampingN.C. mentioned there have been neumerous little things but that is expected with any RV these days.
The biggest issues we had was there was a self tapping screw in the compartment where the maceator pump hose is located. If left unchecked, the screw would have damaged the hose. The electrical connection for the slide motor is in the wheel well and attached with tape. Over time ours unstuck and was rubbing against the tire.
At the end of the season we had the brakes checked and they too needed service. Apparently the back plates and one drum had to be replaced. This after only 6 trips and 2400 miles.