I've been practicing with my X5 after putting a Springer Precision stainless steel guide rod in. With the 15 lb. spring, after my first shot, the gun doesn't even dip back down low enough to be on target, and I have to push the gun back down. Should I install the stock guide rod assembly, or invest in one of the tungsten guide rods? I've been shooting Speer Lawman 124 gr.