My 2015 31SL entry door looks warped. It is flush at the top and bottom on the handle side but sticks out in the middle at least 1/4" to 3/8". It has been hard to close for quite a while, you have to slam it to get it to close. I thought it could be the strike plate causing the problem but i removed the strike plate and closed the door. It was a little easier to close but the door still sticks out like it has been doing. Anyone have any suggestions on how to fix this. Thanks.
Have you checked the hinge side to see if the door is separating from the frame? There were a lot of door issued with the friction hinges on the 2014-2015 models. I had our door replaced twice under warranty I finally removed the friction hinges and replaced them and had no more issues.