Anyone that has a set of Lectrons set up for gravity feed...Is the needle separate from the seat or is it held into the seat? I found out I had what I thought was a needle/seat for a pumper setup so I called up LectronFuelSystems and ordered 2 new needles & seats. They just arrived and the needle is kept in the seat with a small lip. I don't really like this design because it seems like a great place for gunk to get trapped in and it will be harder to clean. If anyone can check there's out I'd appreciate it.