Recently I developed a trans issue that is going to require a valve body repair to fix....I am doing the 4 tube seals, the bridge seal, the usual fluid and filter change , the sealing sleeve and all solenoids....the reason for this thread is I had the pleasure of doing business with The CTSC or California Transmission Supply Company....they made sure I was on the right track for my repair because they did not want me to buy things I did not need....better than that, I ordered the wrong solenoid set and before they shipped they contacted me because the part number they suggested was not the same....they actually crossed to the email exchange from earlier in the week and made the change after I had paid....they asked how soon I needed the parts and I told them by this weekend....the solenoids had to ship from the zf warehouse in Illinois....they gave me overnite shipping at no extra charge....i had heard good things about this place but wow, they exceeded all expectations....they really came through ...I know that some of you have used them....for anyone wanting genuine zf trans parts this is the place....Klaus is a total pro....I just wanted to pass on my experience as it was my first time with them and hope it might help anyone else with getting genuine zf trans parts without any worries or b.s.