Thank you. Time and a small flat brush with the full strength dye so I didn’t have to do multiple coats like the diluted dye used on the rest of the upper. Blended surprisingly well.Yup - that is an absolute biatch to do but you seem to have pulled it off very well. I’ve only dyed boots and shoes with a Barbour welt and there’s always a minute amount of bleed into the crease(?). Sublime job.
I also used a q tip and acetone to clean the welt after. Worked really well and I’m going to make that part of my maintenance routine for my natural welts from now on.