I tried testing by having someone pull from the last eye hole, and it did in fact not work, I tired loosening it and tightening again and it did nothing, but when my friend pulled it again, it made the line go under other line, almost like a reverse backlash, and I'm not sure how to fix this issue.

Building on the Curado DC legacy of durability, dependability, and all-around versatility, the updated Curado DC 150 A features enhanced IDC4 technology for even greater casting control. Existing within a suite of proprietary technology, Shimanos Digital Control braking system uses an onboard microcomputer to monitor spool speed 1,000 times per second, applying the optimal amount of braking to reduce backlash while maximizing casting distance, offering practical advantages for anglers of all skill levels. Built on a rugged HAGANE Body, a highly rigid metal structure engineered to eliminate flex and protect internal gearing under heavy loadthe Curado DC 150 A is purpose-built to handle virtually every scenario in bass fishing. The latest generation now incorporates MGL Spool III, a lightweight, low-inertia design that improves startup speed, casting distance, and overall control, making the reel exceptionally capable with lighter presentations. The upgraded IDC4 digital-control system delivers refined braking performance with four distinct modes tailored to the modern bass angler: Mode 1 provides maximum casting distance, Mode 2 is optimized for braid or nylon monofilament, Mode 3 is tuned for fluorocarbon, and Mode 4 offers maximum braking for skipping or casting into heavy wind. Available in three gear ratios, MG (6.2:1), HG (7.4:1), and XG (8.5:1), and offered in both right and left-handed configurations, the Curado DC 150 A also features Shimanos premium Cross Carbon Drag system, ensuring smooth, consistent, and durable performance under pressure. Engineered for relentless, and versatile performance, the next chapter of DC technology is prepared for action

Monofilament line floats and provides stretch, useful for topwater lures and crankbaits
For #5, #6 & #7 weight lines and backing, it is suitable for fresh and salt water use
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