Question I selected a factory preset, made some changes and tried to do the quick store (hold store button for 2 seconds) but I get a message saying invalid preset.  Answer Quick store allows you to quickly store changes made to a preset by storing it in the preset position you are on without the need to select a new name or preset position. You cannot use this feature on a factory preset as you cannot write over a factory preset. You will need to press store, choose a user preset to store it into, change the name if desired then press store again to confirm.