ok so i have had 2 days trying to get it right with no luck, first i opened all the rads flow and return just like your told to switch heating on and work out which heat up first on the run thats fine for upstairs but none of the three rads down stairs get remotely even warm even after balancing the upstairs so i then try to work out down stairs and it all goes to pot, i have tried full open down and half open up but still no luck, could anyone who is knowlagable on balancing please give me any pointers, oh and at one point i had 5 out of 7 working but two down just would not heat up