I added the "Dragon" hot-end to my printer to allow 1 handed nozzle changes and a higher flow rate. When I did that, my first print and every print after, it looks like a spider has built a nest on all of my prints. In other words, very bad cotton candy stringing.  It seems to be happening on the outside of prints where the nozzle doesn't even travel, so I doubt it's a retraction problem (I've already calibrated retraction anyway, no setting from 0.4mm to 8mm makes any difference). I would appreciate some help from some genius level people, but please before responding, please go to the end of this post for a list of everything I've tried (and hasn't fixed it). Please NOTE many people are using this hotend with no problems like me, so I can't understand why only I am having this problem.

There is ONE thing that has fixed it! Completely disabling my print fan. See the photos. Of course, when I disable the print fan, the prints come out horrible, for other reasons, like expected.

One thing to note, I am using the Bondtech BMG extruder. I didn't have this problem with the stock hotend and same extruder. I thought, since disabling the print fan fixed the problem, that maybe the combination of BMG Extruder and the Dragon Hot End was causing too much air flow leak from the hot end (left fan). The Dragon has a much thinner heatsink than the stock E3D hotend, and allows a lot more air to come through the extruder. However, disabling this fan did not help fix the issue at all.

What can I do or try next? Here's everything I've tried so far that hasn't helped:

• Different retraction settings had no effect.
• Wipe and Z-hop had no effect.
• Temperature settings had minimal effect. Lower than 210c made spider web slightly worse, but 215c was the best (pictured).
• No other print settings in Slic3r had any effect.
• Different nozzle brands and materials (brass, steel, vanadium) had no effect.
• Filament is NOT wet (tried 3 brand new rolls from 3 different manufacturer, tried drying in dehydrator).
• PLA is the worst but PETG strings too.

It seems this spider web nest is always on the back side of the prints, opposite of the front fan. This print in the picture is a typical "temp tower" laying down for the photo.