If you cut standard springs down they will become stiffer. If you've ever cut down springs you will know this, its a fact. Springs have a certain number of whats called 'dead coils', the ones that are close together at the top. Cut one or two of these off, you have a lower, stiffer spring.

Tabetha come on mate help me out, you've cut springs before, shatter this myth that cut springs kills children and funds terrorism etc