Have not been able to correct low power on my truck as of today. Just have not had time to work on truck. Now have new lift pump to install. Is a leak on ours, have not found correct "O" ring to repair. Also have new over flow valve installed. Found broken plastic line, runs from AFC to manifold. Not sure if I will replace with new Cummins part or try to do some thing better. My question is, the new lift pump is made in China. Are they a problem or is there another source? This new lift pump came from, Geno's! Looking for opinions. TIA jps