These ailerons are pretty small compared to the planes of to day or I mean the 3D machines. But yes good idea will look into that when the time arrives.From the point of completion that you are now at I would consider drilling holes and installing CF rods instead and maybe use the CF strips to go on the wings LE and TE once the Ailerons are cut free.
Unfortunately yes 95% of them are that way. And yes I spent most of the day make tiny little shims to fill all the gaps on just this wing I am over 120 shims. Doing this because I like to have wood to wood contact for a good tight joint. Don’t get me wrong I am a fussy builder it has to be right or I will not do it especially structural components and plane has to be square, parallel and level.Are the slots that loose? Wow.