hey Sam, sometimes different parts of the ash wood take more stain than other areas. Might be worth rubbing it back lightly with about 600 or 800 grit paper and try and even out the colour a bit more.
Also DB recommends you wipe over the body once and don't over work the stains.
How many clear coats are on the neck ? I'd just keep applying and steel wool in between hopefully will build up over more coats.
Also keep the coats thin and allow plenty of curing time about 4+ days in the cooler weather