I have the A122S also, but no leaks. Have driven in hard rain for about 200 miles first day I had it. And has been washed twice with it raised up, no leaks. You are right, dealer time. Hope it gets better for you.
Never try to teach a pig to sing, it's a waste of time and annoys the hell out of the pig.
2014 Rockwood A122S
2014 Tacoma 4x4