Iam waiting for my saltiga s-extreme 4500 and 50lb acudepth tournament line my question is has anyone loaded up a 4500 saltiga spin with 300mt of 50lb and did it need backing line ,if so what size line are you using . I have not used backing on my 4000 capricon or 3000 tierra and have not had any slippage problems any hel-p would be appreciated ....matt