I know this thread is old, but I was trying to do some research.
I thought that I could use a 23g for everything up until now. I just got some Scrioxx Test Susp, and I cut it 1/2 and 1/2 with B12. Im still unable to get it to push through. Im not a noob at this except for the product im trying.
So this is what i've come to.. either the susp is alot thicker with the raw test in the bottle contents, im not cutting it with enough b12, or the pin im using is too small (23g).
Just trying to put this out there for any experienced users with Scrioxx Test Susp that might shed some light on this for me..
thanks!
Raw