Get a good all metal geared servo like the ones above or a jr9100t and forget about it. A single plastic geared servo will not last in a MT. You'll also notice alot better steering than even dual 2075's or 645M's. Besides like a radio it's an investment, my jr9000t has been in 4 different MT's over the years. Like my radio, I won't get rid of it till it's dead.