Weather-Maker / FSUIPC Cloud Layers question

I am using the newest version of Weather-Maker and FSUIPC and would like to know this; How do I make the cloud layers appear above 2000 feet. At this time, the set up I have the clouds consistantly start scattered to broken below 2000 feet. I understand that the closer the temperature and dew point are, the more clouds you will get. Granted if they are the same at sea level, you will get fog. Sometimes it seems that when the temp and dp are far apart, the clouds will consistantly start to form at around 2000'. Thanks for the tips. Looking forward to hearing some replies.