I recently purchased a 4095TS, and decided to stick a scope on it. My problem is that my elevation is maxed out on the scope and I can not adjust any further. I was hoping to zero in at 75 yards, but with the maxed elevation I am zero at 50. Should I order an aftermarket aluminum rail to replace this factory plastic? Should I take it to a gunsmith and have the picatinny rail shimmed? Any advice would be greatly appreciated.