My 360 sounds like a sewing machine

Thank you! I'll change the oil again and switch to a thicker weight (probably 10w-40) to see if that quiet things down. Cheaper than new pushrods. I'll have to check the rocker shaft orientation after work, I'm fairly certain that I places them correctly. Airways could have a d'oh! Moment .

I also have a aftermarket dipstick for the oil. Has anybody found these to be inaccurate or are they fairly reliable?