Not sure if this is a stupid question or not.... I have a YSS-875 non ex. Necks are stamped M1 and M1R, looking at Yamaha's website there there are " S' " in front of the model numbers now, sans the Silver Plated options which come after. If I wanted to step up my Necks to the F or G Series are these necks still "compatible" with my sax seeing as it's older? and would it make a difference depending on Gold Lacquer, Silver Plated, or Gold Plated?