Looking around the different pages and forums and the amount of B visa issues, it seems the new rule in Malaysia of only issuing a 12 month ME B visa to company owners, directors and shareholders is having it's desired effect.
You won't get an extension in Pattaya with more than 15 days left on your entry. At busy times they will often tell you come back in the last 7 days of your entry.
It's in the same shared database used at Airports, ports and land crossings. I've personally seen it. All immmigration offices country wide have access.