Goodmark vs AMD vs Sherman vs ??? who makes the best quarter panels?

I installed a full quarter in my 70 duster from amd.My friend installed two in his 70 duster all 3 had the same problem.They might make panels that fit other cars but there full quarters do not fit on a 70 duster.The gap at the top of the door and quarter is about a half inch and the curve at the bottom in front of the rear tire is wrong.Yes they where installed correctly by 2 body men each with 30 years experience.When i complained amd knocked off a 100 dollars.My friend bought his a couple of years ago and i had mine put in a couple of months ago.cost a lot more than that to make it fit.They know they have a problem.For 500 dollars it should fit now i have a new quarter with body filler in it they should have refunded the full amount.Was going to buy a full glass set from them but am afraid they wont fit