i went to the shop to get a gasket for my new ims gas tank cause my old one started to leak after i put the petcock in the tank and everythign..but they said they couldnt get me just a gasket so i would have to buy a whole new petcock and everythign..is there any place where i can get just a gasket

 

Try Yammabond or Hondabond.... if you can't find those maybe try some RTV.