Originally Posted by JamesDean

Originally I installed the K1 kit as you did, then my B2 failed. I replaced that and my 1-2 shift is barely noticeable at all. I then had 2-3/3-4 flaring issues so I installed this kit:

Shift correction package 722.3 / 722.4 Gas | Valve body kits | Transmission Parts by Bulkpart

After some vacuum adjustment, no more flares. Shifts are on par with my 420SEL. Present but not overly noticeable or jolting.