Thanks Nick. I've had the ball and seat apart several time and all looks good. I'm wondering if I may have the metal orifice plate (47) on backwards or the idle mix screw is too far in. See attached - my plate has three large holes (I added the yellow one) and one very small one. I have it on the way it shows in the drawing. Hoping that correcting the idle mixture screw will correct it.
From a bulletin they eventually did away with those original gaskets that had the screen in them along with that plate. It doesn't take much to clog the fine wire mesh in it and then another reason your saw won't run right. Lots of issues with these back in the day. There are several possibilities so it's a trial and error process.
These saws are all I mess with anymore but I mainly run a 4-30a and a 77. I've got those two running like a fine watch. I always tear them completely down and make new gaskets, replace seals , rebuild carb, fuel pump and then a nice leak free machine. They can be finicky at times but patience will pay off..
My favorite 3-25 two button saw. Runs in great shape but will never see wood for being too rare...
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