After installing a washer in the horizontal stabilizer pitch horn that I forgot previously before starting on the fiberglass. Steep learning curve on how to effectively cut and shape the fiberglass, but ultimately it reacts more like wood than anything else. Made a couple cutting mistakes, but luckily nothing that required starting over. I did accidentally cause a partial crack (not all the way through) along the upper rudder fairing, but will epoxy that back together once the temperatures warm up since it is a not a structural piece. Will continue with the bottom rudder fairing tomorrow.