Dwight,
From your description, there is no way that I can tell what is wrong with your leveling system. The possibilities run from a bad control module to just low on fluid. So a through diagnosis of the system is needed to determine the issue.
If a conversion to a manual system is needed, you can build your on system if you have time and you are a very competent electrical mechanic. The only source for a conversion kit that I know of is BCS, but if you are not a good electrical mechanic, I suggest that you have them install the conversion kit. In fact I am not sure that they still sell the kit as a do-it-yourself package because in the past it has involved so much technical support time for installers who were above their head as far as skill level goes. However, their conversion works very well and the installation looks very well, just like it is an OEM system.
Gerald