Hi Jeff,
Like Whrlpool, I'd also be astonished if the rod is not capable of casting to 50' with the slack line presentations you're after. I've got an Epic 476 that will happily cast a 4wt line to 70' if I ask it to. I suspect it's probably your casting at fault rather than the rod (sorry) but I've got a couple of questions first before stating that outright.
Can you describe how the line behaves when you attempt those casts? Do the loops tail? Are the loops too wide? Does the line land sideways? Does it collapse in a heap?
Can I ask what line you're using on the rod? (Brand and model). Very short heads are not good for longer casts if delicacy is required. DT lines offer more control as the cast length increases and at 45', it is
nowhere near being "overloaded". That's only 30' of line plus 8' of rod and 7' of leader, which almost exactly how line ratings are designated.*
Are you're able to easily cast to 70' with other rods you have? The answer to this indicates to me what sort of line control you have.
Are you double hauling on these casts? (You shouldn't need to, but personally, I do it on all casts for the tip control it offers. I almost can't help it.
)
Have you placed this outfit into the hands of a friend who you know can cast any rod? Did he or she have problems reaching 50' with it?
What leader length are you using?
Generally speaking, I've found 'glass rods require a long translation phase before the rod rotates into the cast. If you are not conscious of that aspect of the cast, there's a good chance a nice light 'glass rod will expose that error in your cast when you try to reach out further. (It did for me - 'glass was a good "casting lie detector" for me while I was learning.)
At 45', I'd be very surprised if I needed to tap the reserve power of any rod. If so, the blank has the wrong rating. However, with all else is equal, I've found that strengthening the butt section of the 'glass blanks will give them more reserve power and make the whole rod "less bouncy" during the cast.
Cheers,
Graeme
*All rods are designed to cast
much more than 30' of DT line. That's just a calibration point to get a line weight. If you have the skill, the rod should carry nearly a full 80' DT line of the correct weight during the cast.