Hi... I flew my 1969 260C the other day and when it was time to come home the next day I could not get any fuel to flow through the fuel drain to check the fuel. I opened the trap door in the floor and pulled the latch aft like always...but no flow. No flow from any of the tanks (and yes I ensure it was on the detent for each tank). I crawled under the plane, pushed up on the plastic drain tube and did get some fuel flowing that stopped when I released pressure. What should I tell my mechanic to expect to find/repair? Thanks!
Stephen