I began working on the left aileron tonight. Laying out the cutting line for the aileron wing tip side seemed to be a little challenging as I had to reverse all the dimensions from the plans. I plan only display the right side and you just need to reverse everything you see for the left one. I had good luck using a dremel tool for all of my cut on this piece, By the time I quit for the evening I had all of the cutting done, the marks for the holes to be drilled out for the ribs, all pilot holes drilled for the ribs, and clecoed together.