Good evening. I finally got around to getting the '46 out yesterday but it seems that winter took it's toll. There's a slight miss at idle which isn't too big a deal but from off idle through the rest of the band it starts missing pretty bad and backfires when throttle is returned to idle. I changed the plugs/wires and ran some carb cleaner through with a fresh tank of gas but it didn't seem to help. There's no noticeable smoke but it does smell a bit like unburned gas. I reied advancing and retarding the timing a bit incase the mark was off or the gears were work but it made no appreciable improvement. I gave it an oil change before starting it up and once it was running I noticed it's got 20lbs of oil pressure cold and hot at idle. Revving up the engine the pressure only rises to 22-23 lbs which worries me a bit. I tested with another gauge which confirmed the same reading. At this point I'm thinking there may not be enough pressure to keep the lifters pumped up which is leading to the miss. I replaced the oil pump late last year and I remember it working OK but maybe the bypass has gotten stuck?. Any thoughts on this would be greatly appreciated.