The only way to fix this properly is to sand the whole wrap down to unsealed leather. Otherwise, any patchwork fixes will not match the rest of the wrap. Dyeing leather on the tanned side is one thing, but to dye cut leather on it's side or bottom is very tricky and impossible to get a uniform color. That's why stacked leather wraps have the variances in the coloring of the wraps. The reason is, leather that is to be dyed, say for shoes, handbags, cue cases, etc. is oak tanned and ready for any finish, be it a dye or otherwise. When dye is applied to the cut surfaces, it seeps in at all different amounts, thus the difference, or marbling in the color.
