Kinda late to the party, but here's my 2 cents. I own a Montana 3402RL bought in new 2014. I think the only difference is the 3402 has an extra sink in the bedroom. Pulling with a 2014 GMC 3500HD Diesel crew cab. I've had very few problems. Biggest is two blowouts on the factory Goodyear Marathon (load range E), ST rated tires. I think the trailer is just too heavy for an 80# PSI E tire, but that's what they put on, even though the wheels are rated for 110# PSI. I bought 4 110# Goodyear RST (load range G) LT rated tires and have had no problems in 10,000 miles. Only other problem was the Levelup control pad failed last year. Fortunately, it was while it was home. A new panel fixed it. Very happy with the trailer. Upgraded from a 25ft Class C.