Takes up to 15 minutes to fill up the gas tank on my son's 04 verona (problem has gotten worse over the past three months or so). I have seen posts (here and other sites) referring to the filler neck vent tube. My question is this: is the tube inside the filler neck or outside the filler tube (a separate flexible hose maybe?). If it is inside the neck tube, can I remove the filler tube without dropping the fuel tank and if so, how do I do that? I am very good with tools (Ihave a full compliment of them) and I do my own auto repair work so any help would be most appreciated. I have already addressed the EVAP canister and fresh air vent valve and no discrepancies were noted in those areas. HELP please!