After block dye, because we have allowed the fabric to relax and shrink to its maximum potential, and most of the time this is not the same length wise as width wise, the grain line becomes skewed on the block of fabric. In order to properly cut our tshirts, every pattern piece needs to be trued to the grainline. This requires extra care and attention during the cutting process.
This is one of the many reasons why no one in the industry likes to block dye. It is more time consuming, and requires more attention during the cutting process, even though it delivers a better product.