Did you chaps allow for a gap between the new bracket and the tank for the glue fillet , or just go on the basis it will flex as required ?
I just held the bracket loosely in place and scribed through the existing bolt holes to mark where the holes in the new bracket needed to be drilled. The technical term for the adhesive is squidgy, so there is probably only around a 1mm thickness once it has cured. In other words, I wouldn't bother to make too much allowance in your plans for the adhesive thickness.
