"Question for other pilots of 206's: external fuel drain under the belly. Do you do this check/water drain on every flights, every day or every so often? I only ask as on my last Jettie, the drain had a tendency not to seal properly after each check, so I would do it 'occasionally'. That habit has transferred to my current machine. The walkround checklist lists it as a daily check..."
Should be every day - you can't rely that much on the suppliers to do their jobs properly. Sounds like it needs fixing. The Twin Squirrl has that problem as well.
Phil