Welcome my friend! We're glad to have you here!
We have lots of knowlegable sigma fans in this club who share their experience; I've learned allot.
Let me be the first to offer advise. Thee best thing you can do for the sigma is to shoot it, clean it, and repeat the process as often as possible!
Post often and enjoy the mighty sigma.
Lee
edit: By the way, the sigma is not an oil hog. Lube lightly as per the manual.