No of course i dont,but alpha;s(come on)and what i should have said was get rid get a flush and your ok,because alphas arent great and not cheap for spares
I don't think alphas are that bad, not the greatest yeh but not so bad i would replace it, Its hardly cost effective. You can't go round replacing boilers just cos they're not very good. As for flushing it depends on how bad it is. I've had plenty of partially blocked plate he's on systems that appear to be clean as a whistle, so a flush is often a waste of money. The magnaclean should do the trick nicely(provided its fitted in the right place )