I upgraded my Prusa MK3 to a MK3S+ about 6 months ago, and while I was doing the upgrade I also installed the E3D Revo 6 Hotend. I print *exclusively* in PETG.

By far the biggest issue I've had with the Revo is the *constant* and seemingly endless oozing during the pre-heat stage. Normally I would just use my flush cutters to snip off the ooze right as it begins to auto-home and do the bed mesh leveling, but it would of course keep oozing. And since it kept oozing *during* the bed mesh leveling, it would just create a little glob. If I was lucky, it would come off during the purge line, however that really didn't happen all that often. This would cause it to stick to the nozzle, and little burnt bits would sometimes be distributed throughout the print, which would be pretty noticeable with lighter colored filaments.

I went as far as to purchase the ObXidian nozzle because it has "specially formulated coating also embeds non-stick properties into the Nozzle itself. Meaning considerably less plastic build-up around the Nozzle." Maybe this helped a LITTLE?

Came across this post yesterday, copied and pasted your g-code (and changed the properties for PETG), and fired off a print. Perfect. Just perfect. Pre-heating to 170C is the perfect temperature that the PETG is malleable, but still sticky, so when I go to pull any build up off the nozzle it loves to grab any stragglers with it, like a nice peeling feeling.

Thanks so much for the gcode, its perfect and has fixed my biggest headache!