I’m building a set of TS3’s.  I’ve received the heads and here is a table of the weights:

Some questions:

1. Is it a problem that the heads progress in weight inconsistently?
2. Is it possible to get heads that progress in 7g increments?
3. The spec is +/- 3 g, so they’re all “in spec” (as expected).  Will the progression imbalance create challenges when I frequency balance them? If so, what is the recommendation to correct for it?
4. I would also expect some variance in tip weighting in order to produce a consistent swing weight across the set, right?  If so, what is the recommendation to correct for it?  Are brass or lead weights better?  It would seem to me that bending for lie would be easier with lead (more malleable than brass) — any advice here?

Sorry for the detailed questions — I’m relatively new to building a complete set.

Thanks!