What needle gauge are you guys using? been using a 23g 1", but it just hurts like a mofo. anyone used a 25g on test e or EQ?

I've read on other boards that some guys like to heat up there oils prior to injection. I'm in a situation where i can't bring my needle to a lamp, or have a hot cup of water near by to dunk it in. One option I thought of was to run a lighter along side the syringe for a few seconds. (3 seconds)

what you guys think?

thanks in advanced