So I dicked around and messed with the valves on my 225 slant when they were okay. Checked them 3-4 times after engine was hot and adjusted them to .020 exhaust and .010 intake as per several suggestions. Timing is good. I am getting an immediate stall when it’s in gear and I drive then stop. Adjusted the carb idle and same issue. When I accelerate it feels almost as if the engine is under load (like pulling a trailer). The exhaust sound is deeper as well. Any ideas? Ran prefect before valves messed with..
