02 eninrude 200 hp ficht DI

[my serenity]

HELLO PEOPLE first time on here !!! hopping to figure out my problem on my 02 200 hp ficht di , have done quite a bit on trying to resolve this problem . all comments to getting this problem resolved welcomed !!! no oil alarm , put new/used to me oil pump ,pressure switch , oil pressure diaphragm , fuel lift pump diaphragm , good fuel pressure , 45 psi ,on checking oil pressure i got the oil pressure fluctuating from 25 psi - 65 psi , very fast , from what i'm reading it should be 43-56 psi , HELP !!!