One thing I suggest before doing anything is check the RPM level on idle. I have an US 60 that I am just breaking in and on idle the RPMS are too high. On landing it takes forever to slow it down. Since I have only 2 flights on this plane and the engine, I wll be reducing the idle speed. On a trainer, it does not take much power to get it into the air, so you might just have a few to many RPM's on idle. If this is not the problem, you haven't lost anything by checking and can always to more radical changes if necessary.