Sorry . check the fuel sender gasket. Replace and be sure screws are tight.
Contact RDS with the tank serial number and fuel capacity for a tank drawing. They might have stringer drawing, too
Read Warthog’s posts on the fuel tank installation.
Ask RDS to epoxy coat the tank. Since many of us use external Racor fuel and water filter, I see no reason why the fuel pickup can’t be long to gain more usable fuel capacity. Ask RDS for help. Maybe add tee fitting or mesh pickup at the end of pickup tube. Ask them why a nylon tube is used instead of aluminum .
Look at usingbArmstrong deck hatches which are better design in the cockpit and bracket.
Post pics, too
Good luck.
Sent from my iPad using Tapatalk