I ordered up a Wilson Combat 25CO Two Piece Guide Rod for my Para P-13 which is being fitted to a 9mm Officers slide and barrel. When I called Wilson Combat, they recommended using a Wolff 18# spring (The 25OC ships with a 20# spring). Brownell's was out when I passed through Iowa and Wolff was out of stock. Any reason I can't cut off one of the Government 18# springs I have to the Officer's length? My Para P-13 is only going to be a range plinking toy, not for CC.