I had a TF and it is pretty cool it has the SA limbs on it,,,, anyway my 45@28 PSA (same limbs) shoots a 29" heritage 90 w/ a 200gr point which is bareshafted and fletched with 3-4" shields. I'm not sure what the deflection of those shafts are but cut all the fletch of one of your MFX shafts, hold the bow perfectly verticle and post back and tell us what that arrow doe and we can tell you from there.
also take the serial number and register on the "widow wall" to post there also.