I tried out Z2(ZFX - three coats) for the first time and had a pretty good experience. However, I tried to wipe the car down with Z6 after the first coat, and had a horrible time with it. Streaks everywhere that wouldn't buff out. I ended up with a light distilled water mist and a fresh towel to clear it up before the next coat, and didn't touch the Z6 again after that. The Z sprayer is flat out junk, which doesn't help. I'm considering diluting with distilled water in a better sprayer before giving it another shot. Anyone have any thoughts about this?