And just to add a little bit...

Your junk filter might need adjusting. Within LW tools > options > filters > junk. From there you can adjust how strict or relaxed you set the filter, maybe you need to relax it a bit.

What you see marked as junk is determined by your filter preferences. If relaxing the filter doesn't help, you can always forget the training data & start again Check out this thread for more info about the junk filter (it's really long but there are some good tips).

Junk Filter