[DriverRider]

Due to it being a new to you bike one other thing to check would be the fuel pump. If the PO installed an incorrect one it might cause your problem. Simple and cheap test.

Test fuel pump pressure and flow per manual. Our library pictures are gone and cannot post how-to page for attachment. Someone else may be up to speed on that.

 

[DriverRider]

The CA EVAP system is for fuel vapor management and is not designed to handle raw fuel so if large amounts of liquid fuel are leaking that is another problem. EVAP valves are not user serviceable and if broken/missing parts they need replacement.

Which is why they tell you not to top off your cars fuel tank as it can flood the system causing a CK ENGINE light. Over filling your bike though is not the likely problem but rather flooding carbs from float/valve issues.