Made a mistake on my post. SKU number is 178042, Model 642-1 and the serial number is CZH0480 which is a pro series but it says air weight on the frame. Almost as if someone machined the cylinder of a regular 642 for moon clips and sold it as a pro series. Bad thing is, I purchased from a dealer as a new model. I guess a new side cover is all that is wrong but still!
Any more info. Is appreciated.