I bought my first road bike and noticed the tire vavles are different then that of the mountain bikes I am use to. The guys at the store I bought it from gave me an adaptor to fill the tire with, but the pressure gauge i have will not fit on this adaptor. I am wondering do if need a special gauge for this adaptor or am I just putting my gauge on wrong? Thank you ahead of time for your answers and the sooner the better. I am afriad to ride now until I figure this out. Don't wanna ruin the tires.