Take up your cross daily....die to flesh daily....I agree with your point....the contrast is between the two natures and a saved child of God still carries the old worn out bag-o-flesh around to contend with until death or transformation.....
First, I have said whenever posting on this topic and since I have been here I do not believe when we are born again we are perfect in our mind or flesh or sinless. I still do not believe that. Salvation is by the finished work of Christ and his work alone and we cannot earn salvation or maintain salvation by our works.
I do believe when we are born again our spirit is made perfect and if we allow our spirit to by led by the Holy Spirit and through renewing our minds, partaking of the divine nature, crucifying our flesh, allowing fruit of the Spirit to manifest and understanding our position and salvation through Christ and his work alone, before God. Our mind and our flesh will become subject and obedient to our spirit. This is what the new man and how he is renewed and transformed to.
Renewing our minds, partaking of the divine nature, crucifying our flesh, allowing fruit of the Spirit to manifest and understanding our position and salvation is not working for or maintaining our salvation. It is our part in progressive sanctification. I will never be perfect or sinless, by when my perfect spirit is in control , I do not war agaisnt the flesh, because my spirit follows after the Spirit and has control over my flesh and mind. This is the whole truth of Romans 7:1 to Romans 8:1-17
No offense, I find it surprising you talk about being born again and still think we are powerless over sin and that we are at constant war with our flesh. You seem to label those that disagree with you as pushing sinless perfection. This seems to indicate a lack of understanding about the salvation we never earned, gave us. We get to be a new man in flesh and mind 100% in glory, but we also get to work towards that here and now and I think that is what you and some of your squad miss.