but they need to recognise that if they read the insrtuctions for what they have a very large percentage of them would never have had a problem.
I agree, but what if you didn't get any instructions and call them to find out about it and they say "it operates in the same way as your old one but with 'improvements' "? I know you can't prevent stupidity 100%, but I observe TONS of guys reach right through a non-spinning prop to turn on their ignition and they don't make an exclusive point to make sure they are at BDC (as instructed by the Evolution warning) prior to doing so.