Summary: on your manual dexterity I measuread and drew it out as a template on a piece of paper first lightly glued it to the felt then cut out the hole with a ruler and an X acto knife The idea is to make the slot look as factory as possible Using 3M Spray 77 glue the felt in place I saved the gluing of the folded over parts for later Now the tricky part working
Image Dimensions: 800 x 549
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