Well, I was just about to finish putting it together, when I realized, I have the wrong heatsink. The seller on eBay claimed that it was for 09 macbooks, and unknowingly, I bought it thinking so. Rather, it was the 2006-2008 heatsink, and it won't fit over the CPU and GPU.
Also, halfway through, I realized the bottom plates (old and new) were the exact same (EDIT: They actually were different and it came back to bite me when i was finishing the project!). Thinking I had to replace the bottom plate, I was disassembling the entire computer, when I really didn't have to. So I had to reattach everything I didn't need to and then go back and follow the instructions on how to remove just the logic board. This video is going to be very bumpy and will need a lot of editing, so it won't be done any time soon, and the project won't be either until I get the proper heatsink. I messaged the seller and he hasn't gotten back to me yet, but hopefully he does very soon so I can try again for a 3rd time to get what I need...