Only run that engine at top speed for a few minutes once or twice a year to see what its wot rpm is. At a little over 3,300 rpm that is too low if you ever plan to run fast for any length of time. Need to have pitch adjusted to reach 3,500.
That engine is very sensitive to load, ie prop pitch. Can run 2,800 for extended period if wot rpm is 3,500. Any more (or less wot pitch) and they have blown.
But if you always cruise slow then you are ok now with 3,300 wot.
David