I also use the Rio Grande on my XP and don't have any heavy feeling associated with it. I double haul when carrying a lot of line out so I don't notice any weight with the head well past the guides. I suppose if I didn't double haul and still tried to carry 50 or more feet of line out I might feel it.

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"The years of searching in the dark for the truth that one feels but cannot express, the intense desire and the alternations of confidence and misgivings until one breaks through the clarity and understanding are known only to him who has himself experienced them" - Albert Einstein