HWH leveling jack won't go up

Thanks for all the feedback. I've actually been operating this system full-time for 8 years, so I know how to operate it. My understanding is that there is only one solenoid for the front two jacks, so if one is releasing properly, the solenoid is working. This isn't a weak spring issue. The right front jack was not releasing. It is most likely bent, from being overextended, in the Florida Keys, under extremely windy conditions. I got it to release by putting a jack stand under the axle on the front left side, distributing the weight more evenly. I was hoping to here a valve was stuck on that side, but I am afraid it is bent. My fault. I'll never over half way again. By the way, the HWH website recommends WD40 to lubricate the shaft. Again, thanks for all the feedback.