1979 23ft Sceptre Rebuild

[northwest]

Got the transom cap and floor removed. That's the good news. Bad news is that the stringers are wet from about midship to stern. Transom is rotten but I figured that. I will be cutting off the tops of the stringers and putting new foam in. Question is- since the stringer foam is dry forward, do I need to replace that too, or just leave it and re-foam/re glass the wet part? The goal here for me is to NOT remove the cap.