Originally Posted by Chotch
Why cut both? The only reason for cutting the one is because it wont fit between the wheels.
Why not cut them both so that both wheels start from the same level? Otherwise one wheel is supporting (ever so slightly) more weight than the other. Also, if you cut them both, you needn't worry about which goes between the wheels and which doesn't. And cutting them is simple.
A circular saw will do the trick, as will a nice sharp hand saw of any sort.