I am not familiar with power jacks, HWH jacks on my MH have a spring to return and hold them in the stored position. Some jacks use hydraulics's to return jacks to the stored position. Do you have the spring return? Being you have a fairly new MH it could be just a lose fitting on the end of your hose that needs to be tightened. I would check that first before you drive to Florida. I have had to tighten 2 hose ends due to leaks over the years and replace one due to the line chaffing against the frame. The line was about $100 and a fairly easy job to replace. When you saw the puddle of hyd fluid were the jacks down or in the stored position?