After replacing both the K1 and K2 accumulator springs, I am still getting a medium to severe 2-3 and 3-4 shift flare, especially when the engine/trans are cold. The problem with the flares almost entirely go away once the engine/tranny are completely warmed up. The flares occur with vacuum to the modulator BUT NOT with the line disconnected. I confirmed that the modulator holds vacuum but it does leak down slowly. I have considered the problem being the B2 piston, however the car starts off beautifully under acceleration with the 1-2 shift nice and firm, and almost unnoticeable. I really want to get this sorted out. When I did the K1/K2 springs, I refilled with Dex III/Merc fluid after draining the TC and putting on a new filter.

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john
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'98 E300 TD "Lukas" 156K
'11 C300 "Mia" 10K, Gorgeous!, Wifey's Car