Big Block ticking? Flat tappet cam. Normal?

are you saying you set lash at .011 and .013 cold. After 100 miles you checked again COLD and lash was greater by .0035”
Yes. This was on a fresh set of rocker arms. My thoughts are that if a cam was going bad not all lobes would wear the same so my mind says this is just settling in or the fact that cold in January vs June makes a difference. I have thought about many things that could go wrong, lobe going flat, rocker arm/needle bearings wearing, push rods bending. Yes the symmetry of the measurements perplex me. I will drive it a bunch this week and check the results. Any thoughts or help welcome