Hi Colin from what I remember the DVDs tells every one to weld the plate under the box section to give the hinges some clearance, so no matter how deep the gutter is everyone will hav a water pocket at the side ,so like mick said what you hav done to remedy it works (job done) and any body who forgot to do this can copy what you hav done ,
Jd.
Ps was great to catch up the other weekend you are making a cracking job on your car put some more pics up ,jd