hey dude,
I'm doing ttokyo winny site injects right now. it's not that it's thick, it's just that the winny is not micronized to the degree that human grade is, so it can clog higher gauge pins. (i'm using a 22 gauge 1.5 inch right now). What I did to combat the problem was to get some sterile oil and mix .5 cc oil with .5 cc (50 mgs) of winny. I shake it up and then site inject.
I've done bis, tris, and pecs. (in addition to the usual glutes and thighs).
hope that helps,
Whoopazz