I just removed the oil strainer from the bottom of my 1600 to clean and
> change oil. My question is one of the long studs (some are shorter because
> one of them came out as well) came out with the nut, does that now mean I
> have a loose nut in the bottom of the crankcase? I felt around with a magnet
> with no results. I replaced the stud with a drop of locktite and hope for > the best.
You are okay. There is no nut inside the engine. Locktite should do the trick. Red Locktie is best there.