Curious as to why the crossgrain fillers? Are you concerned that patching along the grain will cause a shortgrain/chipout situation?
I know your aggravation, that is certainly true. I cut some nice dovetails yesterday for a crossmember then in shuffling the pieces out of the way I managed to split out not one, but both of them.
The crossmember would otherwise not see such forces....le sigh.
A half days effort to repair correctly and correct my engineering failure.