I wasn't happy with how high the forward centre stringer attachment bracket was sitting above the stringer so made up a nylon spacer to position it lower on the stringer. Had to file down top of stringer so that the bolt head and channel bracket sit snugly on top of the stringer. Also had to add 2 x stainless panel washers to adjust position.
10mm nylon spacer
spacer in position with stainless panel washers between channel bracket and nylon spacer
bolt head and channel bracket sitting on top of stringer
