My Rampage might need some help in the fuel system department, after sitting with 15% corn fuel for a couple years. Right now it idles really rough, and when you try to get on it it breaks up REALLY bad and shudders and shakes.

Does anyone make a hanger with an upgraded internal pump? I have an external Walbro but would rather update it all with AN fittings and a more reliable pump. I'd be willing to tear the OEM stuff out for better, if it exists.