hi, since i bought my turbo it had a new actuator and was set on low boost, (comes in at 5500 rpm)! can i adjust this by sight safely on the actuator? and how many turns of the thread makes a difference? just rebuilt the engine so would like to have a bit of boost now, its like driving an xr3i!! (reason im asking is no time to visit the rollers for at least 2weeks), and i have a boost gauge so would that help?