Looking to add about 6 inches to the top of my canopy. My plan is to try and take the top part off and add the 6 inches to the sides. My question is what wood would be best for this and what would be the best way to hold it in place. Would just gluing it be enough or should I add brackets? I plan on adding wood filler in the gap between the old side and new side pieces once done. Adding pictures of the canopy and what the wood looks like. Thanks!