Wire not kinked or frayed. Blocks turn freely. Ratchet block works. The forestay is the most stressed rigging on the boat. If in doubt, replace it with hardware from most any rigging shop.
Length affects mast rake.
If slop is present in through-hull bearings, replace bushings. They can be made or bought. If slop is from wear or corrosion on on vertical chock tube or steering head tube, replace. If slop in steering head, try tichtening, or use tapered pin or bolt rather than springpin, a machine shop can fix. Or replace the piece.