Oh look at this. I might have simply purchased the wrong tool (metric instead of SAE). Thus the threading issue..
Another update I did get the nut and ferrule off by bringing in the heavy guns: shop vice and heavy wrenches. The top two threads are kinda toast. Let's see if it can serve for another three intakes. Otherwise (and in any case) another brand is arriving tomorrow.
No dice. Ferrule remover has checked out.
Yet another update. The "other brand" ferrule puller arrived a bit ago and "we" gave it a go. Notice it has thicker lever arm. Actually all three advantages shown in the image were needed: the Kroil lubricant, vice grips, and even with the thicker lever arm it barely held (and actually got bent as can be seen. But those seventies vintage ferrules are now coming out!
