The new version of software (that we'll release shortly) will require a bit of tweaking when using presets from earlier version. The main difference in regards to presets is that AGC controls have changed slightly. The main sonic difference are the improvements in the multiband clipper and final clipper that we've spent quite a lot of time on. The new clippers are cleaner and have more depth therefore, as you've noticed, you might want to re-adjust the multi-band clipper and main clipper drives depending on the sound/loudness you want to achieve.
Regards,
Goran Tomas