|There are several variables.
Whether you are doing the bands in garter st, or ribbing.
Whether you ended up with more rows than the original sweater was written from,
and of course tension works into the mix.
Usually what I do, is finish and decide if it looks the way I want it to.
If not, I frog and make some changes.
p.s. I always work the button band first, so I can place the buttons equal distance apart.
Then I make sure the buttonhole band has the same amount of sts.
*Knit, rip*, repeat between the *s as many times as necessary.