Thanks for your thoughts RandyP.. they say that the stupidest question is the one never asked.. I've been around guns most of my 68 years. With 22 years Army service I have seen a wealth of different firearms, but 95% of them have been long guns of one type or another. I was taught to shoot pistols in the Army, the good old Browning Hi-power, and I had experience with the US issue 1911 when I was stationed alongside US troops in Germany. However.. my revolver experience is more or less nothing so I'm not averse to asking questions. I would have looked a complete idiot if I'd gone back to the dealer and said I've found a crack on the frame..!!
So, happy days. Looking forward to loosing off some lead tomorrow morning at the range. In my humble opinion my 669 is an elegant gun. It shoots well, it's accurate and it's fun. Thanks guys for all your esteemed input.