Okay, I don't know if this is a coincidence or something.
I used to have all the same bugs like what most of you guys are experiencing. Shots-to-goals-ratio, unbelievable one-on-one misses, closing down bug etc.
Then one day, I bought Fifa Manager 2008. Since my laptop was running out of space, I removed Football Manager 2008 from my PC.
However, after realising that Fifa Manager 2008 was ****, I installed Football Manager 2008 again.
I didn't have to install the 8.0.1 patch again after I installed (I don't know why either). And now, my game is free of all those bugs!
Shots-to-goals ratio bug fixed. Closing-down bug fixed. One-on-one-misses bug fixed. Everything is just running perfectly fine!
So I suggest the ones who are on the brink of giving up, just uninstalling your game and reinstall, the patch should still be there.
Try and have a go. Just a personal experience, don't blame me if it doesn't work for you