I don't have much advice with regards to dosing, however, I did notice that you increased by 0.5u from the last dose of 14u. Also, you started a new pen, so that may have some bearing on his #s being a bit out of whack along with the fur shot. Fur shots will typically make the #s spike as the shed is draining. So, you'll have to replenish that shed, and wait and see what he does with this current dose if 14.5u. The last dose of 14u, you held it for about 5 days. How do you feel about holding the 14.5u for about that long, or perhaps a day or 2 longer to ensure that the shed is replenished and see where's at then before increasing again?