I am like the king of injection problems. The other day, I was injecting 2ML of oil into my ventro glute, but needle wouldn’t move, so I pressed a bit more and the syringe collapsed, with all 2ML of oil squirting out the back of the syringe! All wasted! Must have been some weird pressure in the V-glute. Today, same injection, same location, no problem, smooth as silk.