I have a 1955 Thunderbird with the 292 engine.  The valves area is clean as a whistle but the oiling on the left bank is OK while the oiling in the right bank is minimal.  it is not zero, but there is very little oil coming out of the end tube that oils the timing chain.  Am I wasting my time trying to fix this in the car. or do I have to remove the engine and have the cam bearings replaced with the deeper groove in the cam bearing.  The engine runs fine and does not use oil, so I am reluctant to have the engine completely rebuilt if there may be a fix.  THANKS!