If the rocker adjuster comes in contact with the cap, a person could try a thinner gasket so the cap screws down a bit further. Some gaskets I’ve come across are fairly thick. A couple of new caps that I purchased also didn’t have quite the same profile inside and were a little more likely to make contact.
Random tip for the day.... when buying new caps, if they are going on a clean or rebuilt head, always apply some lubricant to the threads.
Random tip for the day.... when buying new caps, if they are going on a clean or rebuilt head, always apply some lubricant to the threads.