Am I missing something here ??
Raise the jacks; that puts the tires on the ground and takes all the weight off the jack and raises them a few inches off the ground.
Do whatever you need to do with the leaking jack.
I just had one done. My RV service center removed it and sent it out for a "rebuild".
'07 Damon Outlaw 3611
CanAm Spyder in the "trunk"