I think of downbearing as a function of crown. I.E., zero

[Jack Reeves]

              crown,

I think of downbearing as a function of crown. I.E., zero crown,
zero downbearing. Little crown, little downbearing. Lotsa crown,
lotsa downbearing. In the real world, this is something I shoot for
but rarely get. I err on the side of more downbearing, if anything.

vince