ecu box problem

Hey guys I have had a problem with my 68 Cuda getting spark. I recently changed from points to a proform electronic ing with a blue ecu box. It seams that when I push really hard on the ecu connector and wiggle it the car will start and stay running. I Grounded the box with its own strap. And you can't put to much torque on the little screw or it will spin the steal grommet on the inside. I am starting to think somthing is loose on the inside of the ecu box. Anyone experience this? Thanks