This is an old post but I thought it was worth adding this information.
I installed Barnett 301-35-10012 friction plats in my 4T as posted by Daniel Williams. I can report that the annoying clutch sticking is gone but more importantly the grabbing is also gone. I can’t believe how much smoother the clutch is now. This obviously makes a huge difference in ultra tight turns. Currently I’m running four clutch spring which give a nice light feel. There is slight slipping in 5th gear. I’ve put abut 10 hours on this set up and had a look at it yesterday. No obvious wear or discoloration. I’m going to try all six springs with 3mm spacers next per Daniel Williams suggestion.