Make sure the vernier knob has had the "quick release" feature removed. This involves removing the rubber boot from the middle of the knob, removing the 1/4" x about 3" rod and installing a chrome plug over the end of the vernier knob. This is recommended in the instruction manual to prevent overcontrolling the trim tab. If this is already done then it is possible to replace the trim tab horn with one with a longer arm. The arm supplied with the kit originally has two holes, one for manual trim (shorter arm) and one for electric trim (longer arm).
Other than that, as others have said, just get used to it.