The speedometer (driven) gear seal on my TH400 was leaking so I replaced the seal and the leak stopped but apparently tranny fluid got into my speedometer cable due to the leak. I first suspected it because my speedometer needle was smooth but now jumps while under 20 mph. I disconnected the cable from the transmission and let it hang low to drain and some fluid has drained from the cable housing over the last 48 hours. Anything else I should do?