Sears gas grill. just bought a sears gas grill. when testing for gas leaks there was one at the

Question

just bought a sears gas grill. when testing for gas leaks there was one at the gas regulator connected to the lp bottle. tried another lp bottle but there was still a leak. tested both bottles on old weber grill and no leaks. (used sudsy water in spray bottle) never had this happen with a gas regulator, i want to return entire grill and buy a different brand instead of just asking for new regulator, afraid new regulator may become defective in the future. any suggestions?