Can't figure how to post a pdf file but I have a two page tuning guide. Was written in 2001 Send an email to jimbo633 at juno.com and I will send it.
I sold the FX years ago. Great boat but required tinkering and finding parts was a pain.
JJ if you click on the button. "use full editor" below the quick reply box there is an attachment manager below the post editor that allows you to attach files.
If your file is too big or you can't get it to work feel free to email me the file with some description and I'll find a home for it so it can be linked.