I'm hearing you but to go one step further would you throw new springs on like I did in the old days?
By that I mean in the street with a spring compressor from KD tools and a bent screw driver to hold the valve up? No checking this and that etc...
Did that in the winter of 79-80 in my stock 400 and a 509 cam/lifter and spring package. with a 4speed and a lot of gear it ran very well.
Ron