I didn't know about the nozzle diameter when I ordered the zero. Too big for my ears, I had a similar issue with the moondrop quark even tho the nozzle is thinner. Etymotic ER2SE have even thinner nozzles and I find them much more comfortable despite the added depth. Either way, I got my zeros to seal with the smallest xelastec tips without pushing them all the way in making them comfortable enough to use.

Well, that highly depends on what headphones you have and where you're located. It doesn't make sense to ship them halfway across the world. It's usually best to find someone local unless you need specialized skills for your particular headphone. It's going to be hard to recommend someone without any information, but I'd say a friend of a friend who can solder and is willing to do it for a small payment + coffee or something is probably your best bet.

Wait the LEMOs aren't standard, Sennheiser got LEMO to make a special version just for them? That's retarded, wtf??? You can at least buy a normal one even if it's expensive, why go custom.