I'm having problems filling up my gas tank, any solutions?

Yep, sure can .. However will need to hook up a professional grade scanner and do an EVAP system 'functional test' first .. That is a whole lot more precise than offering a guess, which is usually wrong .. Technology is available to find out exactly what the problem is, take advantage of it!

Yes the evap system and refuel vent valve will need tested. A scan tool will not find a restricted filler neck witch I have seen many times.