Hi,
Assuming you're using the dual chamber..
After you mix the powder and liquid.. hold it upright and turn the plunger clockwise, then press it to expel the air. After that, select the dose and fire away.
If you try to expel air after selecting your dose, you could be wasting the solution.
Admittedly the instructions are in small print which makes things difficult especially when you've got the lights dimmed for sexy time.
Hope this helps.
Kev.
Edited by member 06 Dec 2023 at 14:28
| Reason: Added note