The fork oil will not fix the leak problem it will only fix the popping issue. The front jacks dropping in transit and when you are set up is another problem all together. There is some type of internal leak or one of the check valves is bad.
My rig was in the shop seven of the first eleven months I owned it so I know what you are dealing with. They will not get in any hurry for anyone especially the way the market is today but I think you at least need to get it to the dealer and let them acknowledge the problem and they can fix it later if you need to use it now but, as someone said you need some blocks or cribbing to set the front of the RV on if you are going to use it.
If you ignore this problem until the warranty is out you may be stuck with a very expensive repair. Lippert seems to be backing off of fixing the issues after the warranty is out like they were a few months ago.
FWIW I am not a hydrolic expert this is just my thoughts.
Good luck in whatever you decide to do.