You said in your first post u had a thumpstar pro elite frame that took a a-frame swinger did u not ? Then said u wanted a mx style swinger like u had seen in pictures did u not ?
Andy posted up a pic showing a thumpstar pro elite frame with mx swinger.
So u haven't got a pro elite frame if it takes a-frame swinger as they took mx swinger. Maybe u have a Bsf or whatever frame not a thumpstar.
You know pictures would solve your problem