Trouble Setting Regulator Pressure

I'm having some trouble setting the correct pressure on my CO2 regulator. I've read a couple of different methods for setting pressure, but none of them seem to work for me. Here is my problem:

I want to set the pressure to 11 PSI. I start by closing the shutoff valve coming off of the regulator. I then turn the screw to set the PSI to 11 on the gauge. It takes a minute or two for the needle to "settle" on 11, but once it does, I open the shutoff valve and the keg begins to pressurize. The problem is, the keg only pressurizes to about 6 PSI. So obviously this method isn't working.

I tried setting the pressure with the valves open, but after setting the pressure at 11 PSI and leaving the keg for a few hours, the pressure creeps up and reads about 5 PSI higher than what I want. Why is it doing this?

I also tried disconnecting the gas-in disconnect from the keg and pressurizing to 11 PSI. I then attach the disconnect to the keg post, and the keg only pressurizes to about 6 PSI again.

What am I doing wrong?

How long are your beer lines? If your running a 2 foot line, 11 psi will be a bit high

Let it "settle" with valves open and attached to the keg, let it creep up, then back it down.

My lines are about 5 feet. I'm carbing at 11 psi, so I should be serving at the same pressure so my beer stays carbed. It's just a huge pain to have to keep readjusting the regulator after it overshoots the desired pressure. I basically have to release the pressure and start over again each time. It is a rather cheap regulator. Do higher quality regulators have the same problems?

Just creep readjusting up so you don't over shoot. Easier to get more gas in the beer than out of it.