In a further attempt to try and bring information together here, I'm going to try to make more useful threads about famous pen mods that people regularly ask about. I'll be combining threads on the same topics and linking to related info. Think of this as another Master Threads Listing, but with a more focused goal. The main threads will follow a "All About..." system of a main thread with links in the first post to further useful topics. I'll also list the linked topics here for easy overall reference.
Feel free to reply and give any ideas if you see repeated questions about certain pen mods.