I have an XL (+ MFC 101 Mk III) and a number of two amp presets (using both X and Y of Amp1 and Amp2). On all the presets I have checked so far the Power Amp Hardness is 0 on all my Amp2's (both X and Y are 0). I have checked the values both in Axe Edit and on the front panel of the XL.
Besides that ..... The Fractal gear is my best investment in musical gear EVER. Christmas eve 10+ times per year
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Thanks from Norway
Edit; Using the "Set amp(s) to defaults" on the front panel (Utility Menu) does not correct the Power Amp Hardness, but de-selecting and re-selecting brings the values back. So does the Block Reset in Axe Edit.