Conciously RELAX your hands, wrists, arms, & shoulders; drop your shoulders down & your elbows in instead of tensing your shoulders up & sticking your elbows out & up - most of the need for continuous correction stems from you being too tense & holding on to everything too tight, so work to reduce that if you can. Some recommend imagining tha you've got egg-shells between the grips & your hands, try not to break them! Then try to look further ahead & plan your ride & the path you'll take on the road ahead a WHOLE lot further ahead of your Spyder than you are currently!
Look ahead at where the road goes AS FAR AHEAD as you can see it, then let your eyes scan back to the patch immediately in front of you, tracing the path you want to follow as you do - aim WAAAY ahead & then scan back at least once every few seconds; add that in to the start AND the end of the 'check out front, check behind, check left, check right, check the instruments, ensure all is fine, then do it all again' scan that should be happening every coupla seconds anyway, & it'll ease the 'micro-correction' & subsequent continuous over-reaction that comes from keeping your point of focus too close in front of you.
Basically, you need to plan well ahead & look ahead to where you want to go as well as working on consciously relaxing the tendency to grip too tight & then over-compensating instead of gently guiding your Spyder along a well planned path that you've already scanned a few times!
Good Luck!
Ps: if you do this ^^ properly, then you might find it helps even more to wind the shocks back down a little & drop another couple of psi out of your tires, fronts especially - your Spyder isn't a finely tuned & crisply responsive race machine, it's far more of a tourer/roadster, altho it can handle quite well & briskly IF you aren't wasting too much time on the myriad of minor corrections that a 'less than ideal surface' might seemingly call for!! Ignore the little stuff, try to gently guide it thru the big stuff & around the important bits while you let the tires & suspension soak up the little bumps & minor corrections that you are likely exhausting yourself trying to correct for atm!