I tried to adjust the lower on the 1a and thought I was going to break the glass so I never adjusted it, left me with a huge blind spot, the upper glass seemed to have less vision than the oem, I'm very pleased now.
Added mudflaps and a Line-x bed liner, I'm wanting some oem running boards next as well as BF Goodrich Radial Mud Terrains 285-70/18. 218 miles so far, did a Mobil1 oil change last night. Had the rear and back side glass limo tinted. Enjoying everything about this truck.
wee