Still a lot of stringing. Yes increase the K factor slowly until stringing gone. This can be done during printing so you can see the changes in string while printing. Just execute M900 Kxx while printing from the rep host. Maybe a good idea too to use a single hotend profile instead of your dual profile, just in case the mixing code is toying with things. Also when done with your test print, please copy and send a log of your gcode so I can see what the lin advance is doing .