Dialing in negative pitch huh? You go from burning out tail motor flying upside down
I AM NOT MAKING FUN OF YOU - just being my usual sarcastic self and poking a little fun at ya.
Setting up your head for equal pitch is a one of those topics that can take hours of explaining and a ton of responses - so get ready for them. And everyone probably does it a little differently. But the mains things are leveling the servo horns, leveling the swash, setting a linear pitch (0, 25, 50, 75, 100), then moving the throttle to mid stick (50% on the screen) and adjusting the two sets of upper control links until you have zero pitch.
Many times you'll find that the negative and positive pitch will be different. that's when you have to raise or lower the swash to get them to equal out. It's a lot of fun and takes some time, but once you get it right, it's a great feeling to watch your heli lift off with everything tight, no vebrations, just nice and smooth. It makes you feel like you really accomplished something. It isn't really hard to do, just can be time consuming to get it perfect.
Glad you found out about the water break in. Hope your luck continues.