I've posted a thread on this issue before. My Russian tortoise has now even more uneven growth. I don't know what I'm doing wrong. I have a good diet of mixed greens, weeds, mineral, temperatures, UVB, etc. here's what it looks like.
Boy, I sure don't see what you're seeing. The tortoise looks very symmetrical to me. I don't even see areas of irregular growth in the new growth parts. I think you're being an overly-worried tortoise keeper.
There's nothing wrong with that growth. The growth pattern is different in the coastal areas than on the top of the tortoise, so as to maintain the correct outline or silhouette of the tortoise.
that's just how most Russian tortoises grow. I've never seen a Russian pyramided like I've seen sulcatas and leopards but they always have clear growth lines. both of mine looked like that.