RE: OS AX .46 question
Given your particular cicumstances as the others I see no problem in just fueling and go.
One issue that sometimes occurs and thats a long shot has nothing to do with the engine. If you are using a conventional fuel tank over a protracted dry storage period the rubber bung stopper can become hardened and present some leakage problems either just pressure and or liquid.
This is not a worry if you have a Hayes 'O' ring type tank.
John