If you have injecting Tren ED in the SAME glute for weeks then you DO have undispersed oil in there that may very well be causing the discomfort...(whether you realize it or not)
I'll tell you what I that seems to work real well for me...(itrs my own top secret, so dont share it with anybody
lol...)
Get the pin ready (with oil in it) then hold in in your armpit for 30-60 seconds (until the oil is warmed up and flows smoother threw it)...THEN inject it into the site, followed by deep hard tissue massage for atleast 2 minutes after injection is complete...This is what I do and I have virtually no pain or soreness from either QV Prop OR Karachi Sust...