That’s a fairly good DIY post and you’ve earned a Kudo for posting it. Contact Clothing to claim your Kudo prize. The insert is best cut with a sheetrock razor (box) knife and trim it on a slight chamfer for fuel flowing easier. The wooden paddle (fly) bit leaves a rough texture that aerates fuel and can caused kick back.
Thank you BCB, and good catch, i forgot to say I smoothed mine with a semi circle file.(edited) added info and pic to post.Last edited by Brewkrew72 on April 23rd, 2018, 1:26 pm, edited 1 time in total.