Hello, I would like to ask a question about guttering. Hopefully there are some experts around here! I would like to block the middle of some guttering and take it out as and when I need more water on one side of my conservatory. Can you do this with an Internal stop end - do they fit into guttering or just at the ends. Or is there anything that will enable me to do this? I will be fitting new guttering so there is not a specific size just yet. I hope you will be able to answer my question. Thank you, coinop.