There's usually a newer version of many planes, but at least the F-16 has 'always' (for the more than 10 years I've been flying it) been supported by good aero data, so if it doesn't work for you, no updated version of it will change that - the problem is elsewhere.
Also the F-14 has for many years now been a joy to fly.
So I at least am not saying that you need to install updated versions, I think you need to check your control calibrations because that's the most likely suspect.