I installed a new schlage dbl cyl deadbolt it works until I lock unlock the exterior side of the door then the interior side key turns to the point where it has to push the bolt to lock and it stops
Since it is a new install and hasn't functioned properly ever, you probably have the bolt on backwards. Recheck all the parts against the assembly instructions
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Since it is a new install and hasn't functioned properly ever, you probably have the bolt on backwards. Recheck all the parts against the assembly instructions