Update
I bought my springs from matto cycles since they are a supporter of this site.
https://www.mattocycle.com
They supplied Race Tech springs 0.46 for fork with necessary spacers to make them the same length as stock and a 5.8 spring for the shock.
I preloaded the rear shock spring 10mm. Installed sag is 38mm static and 101mm rider sag. Bike handled fantastic on a slippery muddy ride of about 30 miles so I suspect spring rates and sag is correct for my 200 lbs nekked weight (about 220 lbs suited up). Feels better crossing logs too.
I did not measure the fork preload, but 3 of the 6 supplied washers made the Race Tech fork spring the same length as the stock springs so I should have the same fork spring preload as stock.
Now that I have FINALLY installed the correct springs for my weight (40 hours) I can feel that the bike is not using as much suspension travel so rebound is more controlled and suspension action and bump absorption feels much smoother. Bike handling inspired confidence in very muddy slippery conditions even with stock short knob Michelin DOT tires.
Happy Camper here! Thanks for all your inputs. Steve