Fabricated F-8109 Trim tube per plans. Deburred and edged all parts to be primed Cleaned parts with Prekote in preparation for priming. Drilled out 3/16 inch hole in friction block Plans called for using a die grinder to enlarge the opening on the plastic bushing but my experience has been taht taking a unibit with a 5/16 inch sholder and using my hand to turn it, it enlarges the opening great and is perfectly round. Ordered epoxy primer from local NAPA store
