Ah Ellzy that's a blow. Sorry to hear it. I'm glad that you are still at it like a bull terrier though: don't give up. Having a month to study is good. Maybe take a couple of days off from it and enjoy your flying training to start with.
What did your KDR say? Did it confirm the subject areas you suspected in your post?
> Any chance you can throw a few questions at me that aren't in the book?
Here's something that might help you more: why not drum up a couple of questions yourself in the areas that are problematic and then try and solve them in explained steps yourself - as if you were teaching someone how to do it.
Then, if you want to, post your questions and your worked answers to the CPL-PERF forum and let us all take a look and peer-review your working. I reckon any students studying CPL-Perf at the moment would benefit from this as well. You're undoubtedly not the only one having a few problems with this part of the curriculum.
Who knows, it might kick off a new "Brain Burner of the Week" segment
As for extra questions, we're still working on the loading question bank for the online course at the moment. There are the cyberexams of course but you have been working with them already. If you need even more, Rob Avery has books of questions put together for different subjects available in pilot supply stores.
Good luck with your studies Ellzy and keep us in the loop. We'll help as much as we can.
Cheers,
Rich