I was able to retrieve the bent pushrod that landed in the valley with a flexible magnetic tool. I was surprised to see how available the new pushrods are so I decided to replace all 16 with new ones rather than replace the two bent ones piecemeal. This is a low mileage rebuilt 292 engine which had been sitting for 7-8 years before I got it running. The valve train is clean and free of any grease buildup and the oil is clean. I can only assume that a couple of valves must have momentarily stuck as none are stuck now. I have heard that pouring some automatic transmission fluid down the carburetor with the engine running can free up sticky valves. Is this a good idea or is there a better way? How much fluid should I use if I choose that method? Thanks, Alan