I started this step but noticed a discrepancy with the parts. I think the BOM is wrong and only called out QTY 2 trailing edge shims instead of 4....2 per each flap. I took pictures and sent to Glasair support. The next day (June 8th) they acknowledged the issue and shipped out two on Tuesday (June 9th(....great customer service!

I decided to spend some time cleaning up the workshop as it was getting pretty unorganized and shaving were everywhere!