My fl350r has 100 psi compression , i checked it after i warmed the engine up and also had the throttle depressed , is that enought

when i bought it i had to replace the piston , it only has 20 hrs on it , i am taking it to the upper pennisula in october, the engine is stock, someone told me i should have around 140psi, would 40psi make a world of difference???