This might be a little random question. I have a set of TPMS sensors from my current (S550) wheels that I had the tire shop remove when they mounted new tires for me a couple months ago. I found out these TPMS are the same as the ones in my F150. So, since I'm going to aftermarket wheels and new tires (which I already have) soon, I want to use these sensors and get everything mounted up- however I found out a couple nights ago that they lost 2 of the sensor screws (the ones that secure the sensor to the valve stem). Are these screws something tire shops have or do I have to get them from somewhere? They're pretty small so I can see how they got lost.