The S&W M&P 9mm is my first handgun and I have a question about lubrication. The manual, in Figure 24 on p. 23, describes 7 lubrication points. They're all straight forward except for #3 (as shown in the figure). From some online browsing, it looks like this area contains the sear housing block assembly and the ejector - but I'm not certain as to exactly what location I should put the drop of oil. Any help from someone experienced would be appreciated.