I only do two or three windshields a year, maybe 15 or 20 overall, so my experience is limited. My only real issue has been the v-notch in the urethane nozzle. I have an Equalizer notching tool, but after seeing some pre-notched nozzles available I think I'm doing it wrong. I cut two v notches in the nozzle 180 degrees apart, but the pre-notched ones only have a single notch. Which is correct?

Listen to what the Urethane company tells you to do 95% of all cars are fine with the precut tip

I’m confused, so you have two V notches in each tip on the polar opposite of each other? Which direction do you shoot your bead in? Are the notches side by side as you shoot or front to back? That’s one massive bead if you have two beads going simultaneously. I must not be understanding your question

You should try that with your glass cleaner

Even if you do 1 replacement a year for a customer you need to have proper training. Get with your rep and have him get you the book and go over it with you and take the test. 2 v notches?

Just tried a single notch on a Chevy Cruze. Works much smoother than how I was doing it before. Only issue is when pulling a bead toward you on the upper side, you can't see the output from the nozzle when reaching to the center of the car. Not a big problem.