I just did mine and it went pretty easily I just follow the instructions in the pamphlets. I bought the two kits off eBay from two different suppliers and I got a really good price on them.
I wiped off the heat sink compound and I don't have any, it looks like lithium grease to me but I'm sure it's something different.
Mine looked really good inside there was no crud or debris, there was a little moisture which is to be expected but it wasn't corroded looking. I'm thinking the guy before me had serviced it or else they did a really good job on the Depo maintenance. I'm leaning towards the guy before me did a good job.
I didn't take any pictures inside the housing while I was cleaning it the purge valve had a little bit of crud I took some fine steel wool and electrical contact cleaner and buffed it up. Here's a picture of the old Parts just showing that they looked pretty decent but I was happy I did the job.