@Trinity I keep needle cartridge taut with skin at a 90 degree angle. Once I trigger injection button, I remove my finger and let machine do the rest. After machine has turned off, then I let needle cartridge sit on skin for 4-6 seconds My settings: Syringe always to my syringe size, MODE-always on continuous. WHY? It works for me, never used DOSE. AMOUNT- I keep it at 3cc as I don’t want to blast skin with large amounts. SPEED: Between 1-5, I keep it at 3. I never have product loss. This is only my OWN experience with my EZ. The more experienced DIYers may have better input. 🙇🏻‍♀️. Great day