Request a simple feedapi mysql help

I've feedapi + common syndication parser (Drupal 6.19, Feedapi - 6.x-1.8), up and running on a large aggregator site.

Now I am trying to change the feedapi settings for the whole site using mysql queries. The following is what I'm trying to achieve.

  • Change the current set value of "Delete news items older than:" to a different value (8 weeks to 4 weeks).
  • The "Minimum refresh period:" need to be changed to a different value (say 12 hours).
  • The "Created date of item nodes:" need to be changed from "Retrieve from feed" to "Use time of download".

I'm still a mysql newbie. Appreciate any help with the mysql queries.

Thank you in advance.