Thank you man!

I recently read up on the red veins because the Miracle Mack's have veins so red they look like blood.

What I read suggests that some strains and different phenos will carry forth the red vein trait regardless of stored nutrients.

Considering the Miracle Mack's have dropped very little and maintain very dark green foliage, it might be an indicator that they're loaded up on nutes like you're suggesting.

I definitely fed them pretty good throughout their life cycle and am letting them use up what's left over the next couple of weeks.

Will probably not use up all the stored nutrients but that's alright :)