Why is my SOLID VALVE leaking?

Here's a hint on how you may use the SOLID VALVE System in an optimum way:

Before putting the SOLID VALVE Balloon on the Filling Chamber, stretch the balloon upwards so that it extends vertically from the VOLCANO as the balloon fills. We also recommend turning off the air when the balloon is 90% filled to avoid building back pressure. 

We recommend using the EASY VALVE System for optimum performance.