I was having the same issue with the smaller guides a lot of newer rods have. I starting adding some Loctite gel and that solved the problem. It adds enough protection to the wraps and is flexible enough it doesn't damage the guides. I have also used Loon's Knot sense and it works as well, but you need a UV light (Sunlight) to cure it.
For 30lb braid, I would use atleast 7 wraps (7 up and 7 back). You might get away with less using 50lb and up.