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Message: [QUOTE="Powermaker, post: 1322048, member: 22404"] I have an 09 6.4 with about 68'000 miles. About 5k miles ago i got some KEM files. 150 tow, 250, 275, 310 and 345SS. The 250 had really rough shifting even after I did my trany relearn steps. Don't get me wrong I like it but i doubt a stock trany won't last long shifting like that. Back on topic. I went straight to the 345 after that and use it as my DD. I don't drive crazy, I've never had it over 85% throttle. So I was taking off from a stop light, about 25% throttle. It went to shift out of 3rd into 5th and felt like it neutralized and RPMS shot up real fast then it jerked real hard. No check engine light. Pulled over, shut it off for about 5 mins. Started it up. Accelerated real slow and it had a light slip from 3 to 5. I drove it for about a week. When it's getting ready to shift I let off the throttle and that almost eliminates it. So it slips worse the faster you take off, too fast and it will hard jerk and neutralize. There was once or twice that it hardly did it at all compared to how it was slipping. I Tried changing the tuning and that didn't help. Anybody had this problem before??? What do I do?? Now it is not wanting to go into overdrive all the time or shifting down from OD and stuck in that gear. I have a brand new 5r110 that was bought from ford for a 2006 6.0 about 3k miles. Can I switch the solenoids out? or the whole solenoid body from the 06 to the 09? That should fix the OD problem [IMG]http://images.tapatalk-cdn.com/16/01/06/a94e05d5205a3331d42641f47b8bb4d7.jpg[/IMG] Here's the 2006 valve body [ATTACH=full]160023[/ATTACH] Here's the 2009 Sent from my iPad using Tapatalk [/QUOTE]