I see.
Well the fitting you showed in the link is the same as the tank fitting I had for my 25 horse Johnson.
I believe it's a standard fitting and once installed on the tank you should be good to go.
The stretches I used to fish in my youth Bill were pretty good through the summer and of course Browns are fairly tolerable in comparison to Bows and Brookies. But I suspect the stretch you're floating is further down stream from my old haunts and leaving them be till the waters cool is a wise and considerate choice.
It's an easy do it yourself fix.
A little gentle heat from a lighter and it'll slide right off.
Then take the rod to a local tackle shop and see if they have a replacement.
Reinstall with a little thermal cement or 5 minute epoxy and your good to go.