Have you tried the new 4mm trailing spindles? Part number TLR1075 - see
here
When we've tried them, they do calm the front end down.
Is your issue too much on corner entry, on exit or during the corner.
Running the 30 degree front kick block from the 22-T and 22-SCT also calms the front down but you'll probably also want to change your castor blocks to 0 deg or 3 deg options.
Running the link longer helps and you could modify the link as others have down to have it mounted further outboard at the kingpin. That is known to calm the front end down.
One last thing - just to be sure - is the problem at the front or could it be that the rear end is suddenly letting go causing the back to break away and over-steer to occur? Just a thought - without seeing your setup entirely, much of this could point you down the wrong path but, hopefully it might help.