As soon as possible, you need to flush the hydraulic system to get rid of the brake fluid in it. The seals are not compatible with brake fluid. This is the link to fluid recommendations from Lippert.
https://lci-support-doc.s3.amazonaws...cd_0002088.pdf And this is how to flush the system.
https://lci-support-doc.s3.amazonaws...cd_0002077.pdf
When you have taken care of the fluid, you will find that replacing the small breaker that serves both the hydraulic pump and the 12 volt power inside the trailer with a 80 amp breaker such as this one.
https://www.amazon.com/Bussmann-CB18...6034779&sr=8-8
This thread will help you determine which breaker to replace,
http://www.montanaowners.com/forums/...13573#poststop and once done, you should have no issues with the system stopping and starting. And you should maintain the hydraulic level in the reservoir to about a 1/2" from the fill hole in the reservoir, with all the slides in and all jacks fully retracted.