If the scissor jacks are easily raised/lowered with the manual crank but the drill adapter doesn't seem to be strong enough I'd say the first thing to try is charging the drill if it's a battery operated drill. If that does not allow it to crank you'd next want to try a more powerful drill. view full answer...
I tried looking up your axle capacity online but wasn't able to determine that so I'd need you to get me the axle rating (should be on the VIN plate near the coupler) as well as the length of your current springs without a load on the trailer and with that I will be able to pick you out the best spring setup. You want to match the axle rating and then also go with springs that are slightly shorter than what you have to account for spring stretch over time.
I attached a link to all of the... view full answer...