Suggest you at least try # 3 in order to see if you going in the wrong direction.
As in softer, not harder.
That's a 1200 #/inch spring in an 93, not the mush springs of 04 and later.
As insight, for whatever setting you are presently at, try lifting up from under the seat and see how much upward travel you can get.
My guess is not much and maybe none.
Then attempt to press down on the seat and see how much downstroke travel you can get.
Too much preload makes the suspension rigid at top out, and needing too big a load before it even begins to compress.