Big block in Dart: transmission fill tube issue- tried everything! Help!!!

I HAD TO GO TO FLEXABLE TUBES ON MY TRANNY AND ENGINE BOTH. THE RIGHT ONES WILL WORK IF U CAN FIND THEM. FILLING THRU THE NEW TRANS FLEXABLE TUBE IS A LITTLE BIT OF A HASSLE , BUT HOW MANY TIMES U GONNA FILL IT AFTER U GET IT RIGHT?. YOUR DART IS NO SMALLER THAN MY 68 FASTBACK.--dam, I cant stay of the caps button !
Which ones did u use? U remember???