Is there a way to...

[shortleg0521]

...adjust the gear lever up a bit?

http://rivcoproducts.com/shop-by-mot....html?___SID=U
Try this, it may work
shortleg

[BIGLRY]

http://rivcoproducts.com/shop-by-mot....html?___SID=U
Try this, it may work
shortleg

I believe there are some caveats in using that extension.
"For drivers who prefer shifting with toe under, this optional shifter extension will enable you to raise the front shift peg 1 1/2” to allow you to keep your foot under the shifter. This lets you up or down shift with your toe as well as provide additional board space for size 15 and larger boots. For use with GL18020 floorboard set only. Please note: this shifter extension also fits the Honda F6B."
I think this only fit the Heel/Toe shifter that comes with the floorboard set that can also be used on the F6B. Maybe someone who has it can say.