Well my mic of prop, tren, mast hurts like my test 400 did....So i read up on how to decrease the pain. First couple pins i think i might have poked a nerve so i didnt think too much about it. Well now im at my third pin and ****, i couldnt do some exercises for my legs cause it applied pressure too much to my injection site. So i think its cause it too concentrated so i figured the b12 would dilute it a bit and make it less painful. When i added deca into my test400 it made it completely Painless. Anyone else have experience with this? I pin EOD so it sucks