Are you sure that 392329 coil you’re using is meant to be used with a points type ignition?
I use the same coil in my 19 and 21 horse opposed Briggs mowers and they have pointless ignition systems. The coil has a module built into it, something like an Atom.
Here’s a link to the coils I’m using: Same P/N.
https://www.amazon.com/gp/product/B00G990HLS/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1
