Has anybody here use the EZ store door alignment tool? If so can you tell me the best way to use it? I am unclear if you use the bottom middle or top position onthe door strike end, plus they give you two sizes for the door pins, since i have a firebird and its a large door strike pin, i imagine i use the bigger pin? I cannot visualize how this works as far as it attaching to the door strike and latch, thanks!