Ive got a 79 regal 455, 2004r combo having a problem with it down shifting. I place the indicator in drive and run the car to normal driving speed and slow for a stop light, the car wont down shift to 1st it will stay in drive, there is a B&M lockup switch installed and trans go shift kit. I'M getting tired of manually shifting my auto trans, when manually shifted the shifts are firm.Also its not locking up in OD. Sorry for my lack of knowledge in trans but I'm here to learn. I'm willing to do a search so please point me in the right direction.