Havent got a lump in years. I do all my injections in the early morning hours right after the hot shower I get. I preheat the oil on the stove, draw up sit my needle down on the edge of the counter wipe down with alcohol and dart. Never aspirate or any of that shit and done. Idk, just works for me. I have no science to prove any of it works for you nerdy juicers it just fuckin works bros lol. Oh and heating gear doesnt effect the quality in my opinion. But as most of this stuff goes, just my experiences.

Happy juicing from Cuz