My chain has suddenly (or rather I just noticed) developed a large amount of slack. The wheel has not moved since ~ I bought locking nuts a little while ago... Which leads me to beleive it has gone out of whack in about 2 weeks. What is the length of life on a chain on a FG? And is there a certian style/brand of chain that will withstand the job better?

Signed:

Strechted in SD