Have a look at Visual unicycle seat comparison - yours looks like and old-style KH Fusion, which has a lot of curve on it - something I’m not personally convinced is a good thing. Maybe a modern flatter saddle would help?
Personally I’m still in the middle of trying to work out what to get as a saddle to replace my Nimbus Gel which I’m not all that keen on - was thinking of an Impact Naomi, then thinking of the new Nimbus Flat saddle New Nimbus 'Flat' Saddle but now having seen those pictures, I’m wondering if a Fusion Freeride might be what I’m after.