As sais draw it out with the green pin and I'd say inject with a blue

The green is to thick a needle tbh
I used to inject with green as it didn't bother me

Also heat the test up before injecting as it can help thin it out

Your body will get used to it but just takes time

Also don't inject the same body part to often
So 1 week inject the bum cheeks then shoulders then biceps etc etc
Let the scar tissue heel before going back in