Okay, I think the pics will be self explanatory but I will leave a brief description of the issue here. I noticed that the short gutter on my porch overhand was running over badly during hard rains so I adjusted the gutter as high as possible to try to get it to drain back to the longer gutter but it seems that the water has rotted the wood at the base of the deck (right under) the corner post. It looks like the framing of the deck is resting on bricks with mortar joints, and possibly blocks underneath that but I have not dug down to see as of yet. It seems that the rotted wood has caused a significant roof sag. I am wondering what is the best way to jack up and support this roof overhang while I replace the rotted decking and framing. I may even use larger posts to replace the 4x4's that are currently there. i am hoping that the sag is coming from only the rotted wood and not from the foundation itself. Here are some pics so please let me know your thoughts/suggestions/advice.