new race car, no oil pressure

Are the copper tubes short enough to have a gap between them and still be able to plug the galley? If so, it sounds plausible. I bought the same tube kit as you have and when I dropped off my block to my machinest he went over the pros & cons vs having lifter bores bushed. It didn't take long to sway me to having bushings put in. If you find out your machinest screwed up on tubing the main I'd be hesitant to use him again but if you do shoot for getting a sweet deal on bushing lifter bores. More strength and precision involved in the process. Again, best of luck in solving your problem.