Write. We'll figure it out.
Describe the task briefly, as it is. No deck. I'll say whether it fits and what I can do.
Response time
On working days, within a few hours
NDA
Signed before detailed conversations begin
Describe the task
A couple of paragraphs is enough: what broke or what should change, and how you will notice.
A reply within a day
Faster on working days. Slower on weekends.
NDA
I sign before a detailed conversation.