How long did it take you before you were confterble flying under the hood?  I don’t know why but I can’t do anything but look at my six pack while I’m flying under the hood.   I can’t even look at the radios or ill start turning or descending.  I have about 3 hours of simulated instrument time. 

In my humble opinion...a pilot should never get "comfortable" under the hood, or while flying IFR.  The whole focus should be on being hyper vigilant and paying attention to all details.  This is serious business...and if we mess it up...we will probably turn into a popsicle stick in the ground.  To answer your question, if your airplane is trimmed right, it should fly without turning. Have you spent a lot of time on the ground in a SIM? Have you tried to use the auto-pilot?  Let the computer fly the airplane and you then manage the computer (with your instructor's permission).