I got bev-lex lines today. My beer line is 10 feet of 3/16. Works well. My c02 line is 10 feet longs as well and 5/16. An I at the right length for both line? I filled keg with water and put c02 on. I would set c02 for 20 lbs and when I released into keg it would read about 10 psi different. Is this because of the line being so long? Need some guidance. Thanks