I thought I could save time and money by changing the locks on the rental unit after the last tenant moved out, I made a big mistake, I purchased the wrong locks and completely wasted a full hour on failed attempts to make it right, so I gave up and called Jax Door & Lock, they were very responsive and got here within an hour, the technician was nice and courteous, he worked promptly and finished the job in 15 minutes and charged me reasonably. The moral of this story is, let the professionals do the work, it will definitely pay off in the long run, thanks again guys!