I've had a fiddle with my drivers seat and fitted a couple of spacers under the front two mounts of the seat.
I had to loosen all four seat to floor bolts, then slipped a couple of 6mm washer type spacers in.
It's lifted the front of the seat and tilted it back ever so slightly, just enough to offer a bit of support under my tights, which I badly missed from the seat as it seemed to slide away forward.
It feels far more comfortable, my back doesn't ache as much and the Mrs has begged me to do the same with her Lounge.
I've also eliminated turbo lag, well sort of.
Since I've been seating pretty, I've been happily chucking her around a bit more and noticed a healthy blip on the throttle while changing up stops the dreaded momentary lag in power, but it doesn't help mpg (like I care!)