@Tod ********
Hello Todd, just an update, I just completed my extension yesterday, and wanted to confirm that I did have bank statements showing multiple deposits each month that totaled over the required 65,000 and there was no problem.
bkk bank would only hive me, according to my branch, the last six months of statements for 100 baht, and told me I would have to wait a week or two if I wanted the entire 12 previous months. I challenged it a bit, but decided it wasnt worth an argument, as I also needed them to provide me the letter, which they did (for 100 baht), and they updated my bank book as well.
i had also one of the last income affidavit from the consulate (which should have been sufficient for six months, but not in Chiang Mai).
Of course, completed app docs given, bank statements, bank letter, bank book, income affidavit, etc and all done and have my one more year.