Roof Collapse around A/C - Now leaking

Thanks again for the help. I have decided to go with plywood above the existing wood roof but below the rubber membrane. I cut a piece of plywood 20" x 20". I cut a 14" square hole in the middle and cut a 45 degree angle on all the outside edges and sanded them off a bit. I cut it in half so I was left with 2 U-shaped pieces of plywood. I pulled up the rubber membrane (not an easy task) and slipped the wood in between the membrane and the existing wood roof. This will allow me to level off the roof, provide a solid surface to seal against and as the added bonus of raise the A/C unit 1/4" to prevent any future puddling near the seal. I must say it looks pretty darn good right now. I ran out of daylight. I still need to fasten the plywood to the roof using the advice on this thread. I have a new A/C seal in hand and will set the A/C unit back on soon.

I wish I would have taken a picture of the plywood pieces before I installed them but I will take some pictures before I re-install the A/C unit so others can learn from my (hopefully good) experience.

Here are a couple of extra pictures with the A/C off. I'll share more with the fix in a few days, maybe this weekend.