My tack needle seems to be a little sticky ALL THE TIME. I took my tack panel apart trying to check it out and see if I could oil it somehow. Sure enough, when I moved the needle with my hand, I could feel a slight resistance, like there was dirt in there. It was impossible to oil it, so I took the air compressor and blew it good. It didn't seem to do anything, but it was cool seeing how it all works.