OP, you bought a great product in the Northwoods 22H. Our first trailer was a 1998 Nash 22H. What a GREAT product it was! We just sold it last year after the birth of our second child. It was too tight in there for FOUR of us, especially because we do a decent amount of extended trips each year and it gets crowded with very little room for a toddler, an infant, 3 doggies and 2 adults!
Its a shame that you had such problems early on. As you have found though, the RV industry isn't like the car industry. The parts are warrantied by the manufacturer of the part, not the maker of the trailer. Its a little off-putting that you had to contact Dexter, rather than simply go through the manufacturer.
That being said, you bought from a company that prides itself on customer satisfaction. You found that out when you called on Christmas Eve and talked with someone! I am sure that they will rectify the situation for you. Hopefully your NEW suspension lasts longer, but the longest term solution is a wet bolt kit.
Good luck and get home safe!