Ahhh, the infamous inner tire rub on stockers! Good pictorial. I was a bit worried about your jack and blocks, but then I saw your jack stand. For safety, I recommend two stands and let the truck's weight down on the stands before climbing under. I do that, then jack the jack up tight taking some of the weight off the stands...that way, if the jack fails, there is no "drop and pray".
Since rims are hub centric and they no longer touch the hub due to the spacer, did you notice any vibration issues? 1/4" spacers are definitely the quick fix for OEM stocker rub with wide tires, but loss of contact with the rim to the hub concerns me.