I have a 1984 Mercedes 300D tranny is a 722.315 I have flare in the 2-3 shift and need the k1 spring (thrust pin) part number 126 270 44 77. Is the k2 spring (thrust pin) the same part number? The k2 controls the flare in the 3-4 shift which on my car isn't bad but thought I should relplace it while I am doing the k1. Thanks