Good luck Tim, Ill share Little of my story with nasal csf, and what was thought to be csf from the incision site. I had a LP shunt placed for the csf leak, which has worked great at least thus far. The drainage from my incision turned out to be benign fluid. Apparently my body was tyring to to get rid of some excess bone wax from surgery. The wound had formed a fistula over the 4 some some years I was dealing with it. Long story short, I had sought care that was closer to home for two surgeries to correct it, when that failed, I went back to Barrows where I had my An and another tumor removed. They revised the incision, found the fistula, cut it out, removed all the bone wax, and packed fat into the site. I share this because my condition was very rare, and may offer some help, or at least something to ask your Doctors. Again, Best of Luck.
Mark