The K1 spring is the magic bullet for 2-3 flare, but is there a K2 for the 3-4 flare?

[tenknots]

I posted this in the diesel forum as well, but maybe someone here knows the answer...


I recently installed a K1 for a 2-3 flare and it completely eliminated it. I still have a slight 3-4 flare and I'm thinking there must be a K2 or K3 or K-something that does the same thing for the 3-4. There are several other "boxes" like the one that holds the K1 in the transmission, so I'm thinking there must be one. Any knowledgeable transmission people that might care to take a stab? I'm willing to order something and try it if anyone has researched and knows which spring affects the 3-4 shift.