I went the path of the Timney- it did take some cutting of the stock to make the safety work in my 22-250, but now the trigger is fixed permanently. I don't want to worry about something going wrong with adjustments on the non-adjustable trigger when I am in good PD shooting or even coyote.
As the drawing in Mr Dorseys article shows, the sear spring on the 788 is used as the trigger return spring. The modification he described is not hard to perform; I have done it on several 788s and a 582 and can be done with a drill press.
Here is the fix. Remove the trigger housing.
Now start taking apart ink pen springs in your home. Check the diameter with a caliper. You will find they come in two basic diameters. The smaller dia is what you want. Cut to length, put that spring in the trigger, reinstall the trigger.
Done!