Does this cart have wooden or metal shafts? In the 'Frontier' and similar "Pipe" EE carts, which have hollow metal shafts, it is possible to shorten them a BIT-say, maybe two-three? inches--on the front end w/o significantly affecting the balance of the cart-remembering that these carts usually have a forward/backward seat adjustment. With wooden shafts, any shortening should be done from the 'back'--meaning you'd likely have to dismantle the cart, at least partly, to do so, and possibly have to redo some bolt holes, etc...a fairly significant undertaking.Having no personal experience, I'm not sure whether/how much shortening the shafts might affect the cart's balance, but I don't think I'd do it unless I did know, before I actually did it!
Good luck,
Margo