To be clear it isn't the same gas since September, I've filled up maybe 2-3 times since I started riding again (Premium gas). It was also full when I left it.
I'm not sure about Ethanol in the gas. I will definitely give Seafoam a try.
I have used the choke especially in the cold. It can take 3-4 presses of the start button to get it going, at which point it may stall 2-3 times.
Oil has 1k miles on it, about 7 months old. Bike has 6.3k miles and is an 2003
It all may just be the cold, and me not allowing it to warm up enough. Just not use to it struggling to idle and starting from stop while riding.
Any recommendations on other things worth replacing while I'm ordering parts/taking it apart? I know how to take the tank off and such, but I'm not exactly the best at it, so I'd like to make it worthwhile when I have things apart. Learning most of this stuff as I go, so I realize I'm probably not taking as good care of it as I should. Then again that being the reason I bought used and not new.
edit: I don't have a user manual, though I imagine I could download one online