Eureka jim This is 4 years late but it might help others brass fittings often get tight too soon. Use the 1/8 th tap to free them up,if using teflon (I do) pull off about 1 foot and stick it on a board flat. Use a sharp knife to split it lengthwise into 3/16 th strips,then like it says stay away from the end so it wont shed in there. Since you freed-up the threads with your tap you'll get enough depth to seal the joint. If you dont want teflon get paste pipe dope rated for gasoline,probably a teflon type. With teflon shoot for 3.5 rounds,narrow tape= neat job !!Good Luck ! My 43rd year of fighting leaks in water oil gas propane natural gasoline diesel ammonia !