Is your bike idling rough, and bogging down off the line at low speeds?
If so, it may be time to pull your carbs, and clean your slow jets. Slow jets are what deliver fuel to your engine at low speeds, and low rpm’s. After sitting for a decent amount of time, slow jets are often the first thing to become plugged. Some bikes have removable slow jets, others are pressed in. If you can remove them, take them out and soak them in carb cleaner. If you can’t remove them, or choose not to…squirt brake or carb cleaner up the slow jet, and also back down through the jet. It may take several times to loosen up the bad gas. For more stubborn debris, take a pair of pliers, and pull a single wire out of your standard wire brush. Then, stick the single wire up and down inside the slow jet opening. This should remove any hard fuel residue. Clean everything thoroughly with your brake or carb cleaner, including your main jets. Then carefully put it all back together. This should improve idle, and overall power.