The radiator leak (passenger side seam about halfway down) affected most all of the early build vans. Production start 10/13 thru maybe 5/14. It is absolutly a warranty issue. They did mine at over 50k with no questions asked.
Your right pull cpuld be a variety of things, but whatever it is is caused by defective parts or damage. Ruling out damage, nothing left but parts. You are out of warranty, but squeeky wheel gets greased! FCA fully covered my oil cooler at 105k, and I wasnt even the orig owner.
Once you get sick of the dealer, there is nothing fancy or oddball about the van. Some strut parts are on back order at the dealer, some are avail aftermarket. For reasons I dont understand, FCA doesnt sell a complete strut as an assembly, so you have to figure out whats bad, then chase parts. Sucks.
I'd consider a lemon law action. Several forum members got the dealer to buy back early diesels. A friend got them to do it on his, at over 80k. I suspect theyd rather be generous on lemon law than get the bad press. Worth a shot. To date, nobody has complained of wind stability or bump steer like you have, so its not the van, its just your van.