This bike has been an on and off pain. It starts up just fine and idles just fine, though it does need to idle high (4-5k rpm) for warming up, but it's old and I expect that. When I take it out on the road, it'll ride fine for a bit, but then it seems to bog down when I roll on the throttle at all. Then it slowly dies out and in order to keep it running, I have to open up the choke which takes it up to ~5k and that doesn't seem healthy. What on Earth would be causing this issue? I'm guessing carb problems, but I am no motorcycle mechanic.