Bike is '52 R25/2. I have been able to remove the front cover (exhaust valve) but the rear cover (intake valve) is captive. I can't raise it high enough to clear the rocker tower bolts...hits the frame. Tilting, spinning, etc., don't help. The valve cover clamp stud is blocking forward movement.
What's the secret? About the only thing I can think of is to lower the engine. This is turning into quite a puzzle!
Kurt in S.A.