360 swap to adjustable rockers
It sounds like chrisII has the long solid lifter pushrods with hydraulic lifters and had to back the rocker adjuster way into the rocker body. Not a good idea. Ideal pushrod length leaves about 0-2 threads of the adjuster showing under the rocker arm.
When i bought my pushrods I ordered them for hyd lifters with the 273 rockers. I ordered 2 sets and ordered them from differend suppluers and still got the same length. I didnt think the pushrod for solid lifters would even fit but i might be mistaken.