Hoping someone can tell me what this is. The discussion about getting water in driver heads made me curious to check my own driver to see if I could see any rust inside from just normal play in wet conditions. I took out the weight screw in the back of the driver to look in and noticed some brown glue like stuff on the inside or the crown. I have had the driver for over a year but the material is not set and stuck to a golf tee when stuck inside. Just curious what this might be as it doesn't appear to be over any seam.