Low RPM / Oil pressure

[djb633]

I have a 1971 pa28 180 and have noticed that the max rpm on rool out is 2200 and max oil pressure is 70 but hovers around 60 while flying. Our ame say this is at the low end of the range.. we have done an oil change and filter and cleaned the screen. He wants to hook up a pressure gauge and a tach and take it from there.
Would anyone out there have any ideas or have had this issue?

Thanks Dave

 

[Domenick]

 

[Ray93J]

 

[Domenick]

 

[djb633]

 

[philiplane]

 

[djb633]

 

[Ray93J]

 

[Klr94ss]

 

[djb633]