Are there different types & sizes of hidden hinges for kitchen cabinets. I'm using standard 1/2". But when I installed new cabinet doors I still have 1/4" off after adjusting. The doors are the correct mesurement and butt each other when you place then in front of opening using a 1/4" space. But after install with hinges I get at least a 1/4 or more gape. can some one help!