So did you manage to complete the experiment Graham?
I'm rather interested in the results as I removed my headers the other day so now have the opportunity to give then a proper clean.
Would be nice to get them as close to 'new' looking as possible
I haven't even had time to start it yet!
Seriously, I've been busy with work stuff (making product, plus creating "virtual market stall" videos etc), that I've not even had a chance to start cleaning the pipes, let alone waiting to see if they corrode...