(6MW) Qing Dao Single Extraction Condensing Steam Turbine

Respactd sir.i have a (6MW) Qing DaoSingle Extraction Condensing Steam turbine 3000 Rpm.. This turbine control Via Woodward (505E) Controler through Cpc. Cpc inlet pressure is 9.5 bar. And CpC Outlet pressure is (2 Bar TO 6Bar) (4mA TO 20mA)& Valve Postion is (0 To 100) Operated. By Cold test. that ok. (startup of steam turbine) Menualy Turbine Reset & through 505E Reset turbine speed first Se t point is 500rpm 2nd is 1200 rpm. & third set point is 3000rpm. After 1200rpm menuly increas 3000 rpm through pluse oil pressure. Zearo Speed Turbine pluse oil pressue is a 2.94 bar 3000 rpm 4bar pluse oil pressure.shift the electric load 1mw turbine speed decrease 2800rpm and after 10 to 20 rpm sowly slowly increase turbine speed via woodward 505E Controler 2930rpm.Turbine speed menualy increas through pluse oil pressure 3000rpm .Controler is the control speed set point. +-3 rpm.& 2nd step shift the load 2MW. This postion is Same first poiston and wht changing is governor valve is hunting i mean Hp Governor Valve & Lp Governor valve turbine hunting. please advise me how to slove the problem. Thnx.