YNOT what prop are you using?
Is your motor broken in?
What kind of rpms are you getting on the ground?
I have a Menz 22x8 for some punch out of a hoover and also tried a msc 22x8.
Also tried Mejzlic 23x8 but it did not have the punch I wanted.
Mejzlik is heavier than the wooden props.
For 3d guess I need a wooden prop.
My vision weighs 15.1


Check your six