Try 10 foot long lines... From what I've read, you want more in the range of 1'/1psi for the beer lines. I'm running with 10' lines right now (picnic taps have 5' lines) and am happier with the pours, and carbonation level, of my brew. Of course, I'm also going through proper faucets now. :rockin:
I'm even planning on using 10' lines in my portable kegorator that I'm building.
I have a dual body regulator now, feeding 10psi to my mocha porter, and 13psi to the other brews (an English IPA, dark cream ale and caramel cream ale). Carbonation is really good on all the kegs (don't have the caramel cream ale on tap yet, but will soon).
Also, if you use a dishwasher, I wouldn't run my beer glasses through it. Better to wash by hand and rinse REALLY well. I've gone so far as to have a section of bar mat over a towel to let the glasses drip dry fully vertical (so they won't spot at all). Doing rather well with these methods over here.