I was cleaning my 1911's today and decided to remove the mainspring housing pin. Now, to let you know, I'm someone who just jumps right in and figures it out as I go along. The mainspring housing ends up popping off the end because of the hammer spring (OF COURSE, everyone here says). Hmm...a little more complex than I wanted to deal with this afternoon. Well, I decided to just put the housing back, replace the pin, and return another day. How often should one take the entire frame apart, down to all the parts, to clean and oil? Every time? Only every few months? What? Thanks.