pro_mp_density displaying incorrectly in windchill...

Our density shows up correctly in the model but when we display the pro_mp_density column in windchill it is incorrect. Our pro/e models are set to inch lbm second. when we set the density to .283 it displays as 7833.413. Back when we converted from WF3 to WF5 the pro_mp_density switched to a units based parameter. So I had to create a new attribute in windchill to allow us to check items in and rename the old pro_mp_density to _pro_mp_density. Any help would be great.