mohawk problem

i bleached mine a few months ago did it for the correct time n shit and some of it appears to broke off at the back so i have like a big dip at the back of my hawk should i start again shave it off to the all the same height or try n rectify it cvos it looks shit atm cos the bottom at the back is tall then there is like a 2 inch bit lol
any ideas or opinions would be helpful
cheers
pigeon