I have read a few posts about guys talking about changing lubes in their lubrisizer and boiling out the old lube and I use to think that's crazy. Why would you go thru all that? Well, after changing lubes several times and not boiling anything out, you tend to forget how the lubrisizer feels when it is working right. The build up slowly effects it till you just get use to it. Today, it got to the point I could barely pull the handle down. I took it apart and boiled it out. It was a very fast and simple procedure. It's like a new machine. Sorry, guys I'll never doubt you again.