I have a Battenkill rod I purchased in 1970 which at the time Orvis called their "Basic for Trout" rod. It is 7 1/2 long, rated for a #6 line. I purchased this rod at the suggestion of my Tool and Die Maker instructor, who also made me purchase several Model 12 shotguns thinking they would be a good investment, but that is another story. Anyway, this rod has been fished probably twice. Now in my senior years, I want to fish this rod. What line would you recommend? I have read that these older bamboo rods cast better with different line sizes then were originally reccomended. Thanks in advance for your suggestions.