In my experience pyramiding seems to have more to do with humidity level/water than any mineral/protein portion of the diet.

I think many people keep their young tortoises far to dry and this results in the shell problem. When we have raised tortoises with a 'wet' end and a 'dry' end we rarely see a hatchling with any shell problems.
website

-----
CDieter
'Reason, observation, and experience; the holy trinity of science.'