Ah, so make the block fit the sashing, not the other way around? That makes a little more sense...
The problem with that is that I will have puckering happening...the other option I'm considering is trimming the blocks down to meet the sashing lenghts...that would cut off the poits of the stars, but it's better than puckering...or un-lined up sashing...
Again, I'm dumb..lol thanks for all the help