I would just add that "about an inch" is what I had before the lift kit was installed on my Windjammer pursuant to that recall and, while I watched it closely for several months and did not see any evidence of rubbing or obvious damage, the service department at the dealership reported noting that there had, in fact, been some minor rubbing above the tire in the wheel well at the time of installing the lift kit. Therefore, I would be leery of so minimal a clearance, recall or not. Your axle manufacturer should have some standard for the proper installation of the axle establishing the required or recommended clearance. Others here on the forum might have advice or other information, too, but you might need to start a new thread to elicit that info.
2013 Windjammer 3008W
2006 Chevy Silverado 2500HD 6.0L w/Equalizer 4
Nights camped: 2012 (29); 2013 (26); 2014 (40); 2015 (43); 2016 (35)