Because I got carried away with sanding down the original bracket that I made, I decided to turn that into a template to make all 4 wing strut attachment brackets. Below you can see the progression of me using a thin cutting wheel on my grinder to cut out the 4 rough cuts of the brackets. I then used a grinder and my belt sander with an 80-grit paper to round off everything. I did this with al 4 brackets clamped together to make sure that it was as symmetrical as possible.
One thing to note is that I wanted additional attachment surface area on the top spar cap strip of the wing so I made that rectangular section in order to hold 2 bolts rather than 1. Using my paper template, my harbor freight drill press, and a can of WD-40, I pre drilled the 5 holes through all 4 pieces at once with a 1/8in drill bit followed by a 1/4in drill bit. The hole where the strut actually attaches to the wing is actually 3/8 in size so I final sized that hole during this process as well.
Finally, I slotted the bottom of the spar web to make room for the bracket to line up correctly, clamped both splice plates, the spacer plates and the brackets together and started drilling through everything. Glad to say that this worked and everything lines up perfectly.