Hi, I have 10 mm microbore system but one of the rads is running off another rad feed and has 8mm pipe to it. I am taking it off this feed and putting it on a new 10mm feed from the 20mm pipe. How do i block the end of the 8mm pipe. I want to use a push fit if possible but can not find anything. Can you get 8mm pushfit or 8mm compression joints?