Great to know, yes I went ahead and upgraded it too. i did have some issues in the front of the bed even when I issued the 211 command with new bed size, the bed sensor would not work in the front of the bed. it would up until a certain point. I check for wire stretch or anything and all looks good. I found out the 12 X 8 aluminum I bought wasn't quite flat, so I got another one step thicker and 12 X 7. Have yet to install. Let me know about your sag... I have a small amount on my stock bed now.