[krek-sikUp]

However, in declaring the Four Noble Truths, which state Nibbana is the cessation of craving & attachment, the Buddha declared the end of suffering is not the cessation of feeling. In other words, he declared the best Nibbana we can achieve must include Nibbana with fuel remaining. There will still remain some vedana (feeling) or sensory impingement.

Yes and this was the kind of Nibbana I had in mind before I read the quote you posted about the Four Noble Truths when you stated "for those who feel". That statement caught my attention because it gave me the impression that the Four Noble Truths were not enough. Also the Soto Zen tradition I follow is deeply commited with this particular teaching as the way to awakening.

So the Buddha declared there are two kinds of Nibbana. In my opinion, his special or unique contribution was declaring a Nibbana with impingement remaining

Let me see if I have understood this. From what you have told I can see at first that the Buddha had in mind two kinds of nibbanas, but the kind he recognizes as feasible is the one with impingenment. The other, the one without impingenments, is not considered as such and second, it seems for me that the nibbana with no impingments is a derivation of the Mahayana tradition where nibbana is a state free of all impingements. Is this right?

because most seekers, such as yourself, imagine Nibbana to be a state free of all impingement or disturbance.

Did I give you this impression? Maybe I have been deluded about such nibbana and I was not aware. Now, with the Puttamansa Sutta I have undestood a little better the bussines of the teachings and a confirmation of what is meant by nibbana.

And again Element,

Thanks for helping!