OK, when I look in my reservoir, I only see one nut, and it looks like the only think it does is hold the reservior on. Is that the one you bleed?? Doesn't look like it goes anywhere?? Got pictures?
both multi vac or syringe r good idea,s or what u can do is strip syringe ie remove plunger and connect to caliper and use as clear res for caliper to see if any air comes out .