I'm having a issue with my 6l80..well it's is a 5th gen camaro,well before I rebuilt it the car would go on gear gone shift gears fine but it recently started neutralizing after it warms up..i could sit in 1 spot in drive and I'll feel when the transmission just let's go and doesn't move forward r reverse. if I cut it off for few min crank back up,does it again within a min..opened it up 4,5,6 clutches were extremely burn up as if they weren't getting oil..so I changed all clutches..checked all check ***** in valve body their good...any idea on what might be my issue..doing same as before rebuild