This should fix your problem. If it doesn't then your lines are too short. Follow @voodoo_donut 's link. Line length can play a huge roll in the quality of your pour. Your system has to be balanced, meaning line length, temperature and carbonation level create an equilibrium. If 39 is going to be your serving temperature then you need to determine the correct CO2 pressure to create the vol level you want and the line length to give your a reasonable pour.
edit: Originally, I used picnic taps I got a perfect pour. When I went to perlick faucets using the lines from my picnic taps I got lots of foam and ended up putting 9 feet of beer line to balance the system though everything else remained the same. The picnic taps offered more resistance in the system than the perlicks and slowed down the pour. Just because the kegerator came with 5 feet of line doesn't mean it will work right for you.