Can't keep 2005 Tacoma aligned

Just put a 1 inch leveling kit and 265/70r17 geneal grabbers on Mickey Thompson classic locks with 4.5 inch backspacing on my Tacoma I got it aligned immediately After the lift and it drove straight for a day then 100 or so miles later the steering wheel was off center to the left and a slight pull to the left I brought it back and her them fix it. The steering wheel stayed straight for 3 or 4 days this time. Any ideas? Maybe this place doesn't know how to properly align a vehicle? I brought my truck there pre lift and tires and they aligned it perfectly I'm hoping they are hit and miss and it's not my truck