Done.
I am picking up Maya on my new assignment - so please forgive my ignorance - this is day 15 of learning.
I think i know what was happening so i had one curve - duplicated it to make it bigger (same parametrization) then lofted. Whilst doing all this i had to detach the surfaces also to make room for the engine. So there were several detachments. Somehow some isoparms got messed up leading to the pinched look. So i had to redo from scratch. Other alternatives i looked at wold be to rebuild surfaces output to polygon and mesh or attach in subdiv. But i really wanted to attach in Nurbs.
Perhaps this is pure ignorance - so please forgive me if i am missing something very obvious - please post to this thread if you know the reason for the pinch.
So results are attached
🙂