Lump in Ass

Hey everyone I need some advice… I started using Test-e 250 and tren 250. I use a 23g pin n I’m starting to get lumps in my left n right glute area. There’s no redness just really tender n sore at times to sit… Is there anything I can do to prevent this from happening? I heard flac seed oil will help prevent the knots. I shoot 1.5cc Monday Wednesday n Fridays… Please help answer my question… Thanks

What length needle, and you may want to rotate sites instead of glutes only