I recently purchased an '05 PowerWagon and was reading that you have to have the truck in 4lo to engage the lockers. However, I could not find (or missed) any information on whether or not you had to stay in 4lo once the lockers were engaged. That is, can I go back into 4hi once the lockers are engaged? Do I have to be in 4lo to disengage the lockers as well? Has anyone had problems with their lockers engaging (or disengaging)? Thanks in advance for any info!