bay area CA
hi all, i have been anti-clipless pretty much my entire biking life, but recently threw some on my road bike and started experimentign to see if its something i like with the possibility of putting them on my MTB. im running some shimano SPD's and a pair of simple serfas clipless shoes. i rode my first 25 miles in them and so far i i notice the benefits. i did a second 36 mile ride in them yesterday and noticed that after mile 10 i started to hear a squeaking in the left shoe/pedal. i thought that maybe the cleat had gotten loose from the shoe but it wasnt, and it sounded like more of a plastic squeak as opposed to metal squeaking. is this normal? should i put a little grease on the cleat? is it even safe to do that? sorry, just a clipless newbie looking for some advice. thanks everyone.