This might seem a bit of an odd suggestion, but when I shaved with a safety razor, (straight razor user now), I believe it made a perceptible difference. Experiment with using your off-hand - so if you predominantly shave right-handed, use your left on the problem areas. Might take a couple of shaves to get used to it. But I believe it kind of subtly changed my shaving angle and the direction of razor travel, as well as the pressure I applied. Probably worth a try?
Mike