I have had my house since 2005. Nobody informed me, nor did I notice, several "obvious" problems with the house, including the "professional" inspector. The primary structural problem is that the foundation of the original house is rubble and the central support beam is rotted. A notch was left in the foundation for the central beam which is mostly rotted off on both ends. In addition, a large notch was cut in the beam for furnace duct work. There are 2 adjustable metal jacks supporting the beam at each end and a half log wedged beneath the middle of the beam. All 3 sit directly on the concrete basement floor. I think I should add another adjustable metal jack to replace the log. I don't know whether or not to be concerned about the situation or not. Any and all responses will be appreciated. Thank you.