Might be a good time to check your rocker arm shafts. More often than not they are bent!! The head through bolts tend to make the aluminum brackets slightly out of round, tough to slide off the shaft. Squeeze them ‘slightly’ in a vise 90 degrees from the bolt hole for easy removal. Roll your bare shaft on a flat surface to check if it is straight. Most are NOT! May also be scored from uneven rocker wear. Just a thought…………
