In the Moderator Star Chamber we have some template messages we can work off for things like this, but, really, what GeoffC just said. Politeness and civility are the watchwords, even in disagreements 
MobileRead guidelines are here <---linky
Cheers,
Marc
Moderator
Without my mod-hat on, welcome to MR, Karl. Feel also encouraged to introduce yourself over in the Introduce Yourself forum. Enjoy.
Cheers,
Marc (Don't make me put my hat back on - it itches!)