Only about 10% of my products are listed

My feed was approved weeks ago yet only a small portion of my items are
showing. I have another feed with about 8K items and they all show.
This one is under 3K items but less than 300 are appearing. Show this
feed is enabled and I have checked everything I can think of. I have
changed my feed for testing purposes and it doesn't seem to make a
difference. Has anyone experienced this before?

Tim