I have a double wide 60 by 15ft per section the wheels are removed and the scurting is off, the tie supports I am reattaching back to the beams. Can I level a little at a time and work my way down the trailer or do I need to do one side then the other? How many jacks do I need. I do not want to pickup the whole house due to safety and stability. Any Ideas? It is in texas black dirt. Thanks for any help.