Hi been working on this bike on and off for over a year now, one step forward two steps back. Got a petcock rebuild kit while starting to put it back together. The screws are so tight I can't get them decided to take off the tank cause the bikes tore down still but I can't seem to get it off either. Am I missing something or I just getting to old to do this anymore frustrated beyond belief would appreciate any help. Thanks on advance 1986 vanture royale