It is a mess from both sides - Most writers change enough names and places to avoid the conflict -
An editor I worked for once described the process as milking an angry bull - no milk and a lot of pain.
Now that you have contacted the writer - even if they never write back - they will have the ability to claim to have been the catalyst for your work and entitled to a percentage of your income from the script. Good lawyers can cost more than you will ever make and smart lawyers on both sides will run up the fees until you both pay out of pocket.
Move the script to Hawaii and then write-off your vacation there as research.
On Nov 27, 2013, at 3:52 PM, Lee <[address removed]> wrote: