Two separate issues here. Using #13 at center in a lower level game, at least in our area, we usually give teams some latitude with numbers. Particularly in JV/frosh games when available personnel might be an issue. Make sure both coaches are aware, and lets play some football.
On the quarter issue, as Bob stated, we have no jurisdiction over that. I often hear coaches complain about it, and I tell them there's nothing I can do about that. @Coach Nowlin I appreciate your sentiments, and pretty much feel the same way, but knowing this is going on is really disappointing to me. Lets call it what it is, it's cheating, what else are they cheating at? Is your integrity really worth a W on the JV schedule?