Careco Eclipse forward/reverse levers question

dgs

Hi guys    I've picked up a nearly new mobility scooter for my wife who had a stroke and has lost the use of her right arm etc?  These models have the forward lever on the right which you push forward and the reverse lever on the left.
I need the forward motion to be on the left? Careco say they can swap it for £80
I'm quite practical, is this something anybody has done themselves previously and that i can do myself?
Your thoughts please
Thankyou