I don't where you live what kind of temps?
wisconsin winter with temps from 40 down to 10F, that motor will never see 175 if its even tuned for power after break in. At 30f my motors ran good at 150 or so, but at these cold outside temps some people cover the top 25% of the heat sink to get the motor up to 200 or so
What i am trying to say is a hot break in my be a little tricky because its very easy to over lean the mixture in colder temps.
During breakin make sure you don't go over 150 that works best for me