Foamy beer hell

Ok so I have a simple two keg system, one a standard commercial style, and one corny. All lines are 1/4 inch tubing. Gas line is split with a simple 'Y' connector to each keg, temp is about 38. the standard keg pours from a wall mount faucet with about 4 feet of bev-line, while the corny "pours" from a cobra head on a 6' line. Force carb the corny at 30 p.s.i for about 2 days and bled down to serving. Here's the issue; the standard keg pours pretty good, few foam ups, yet the corny pours only foam unless I detach the gas line and release all the pressure and pretty much siphon it out. Whats my issue(s).

What psi are you using to serve at? Still the 30 psi???

NO not at all, I serve more like 5-8 psi.