went to play in sandpit trial competition.
too bad we had only 2 car in (prototype/unlimited)
been 19 years since have driven my own stuff in comp.
gopro battery took dump and only got couple sections of tracks and some outside footage.
did you have steering at full lock in your video.
in the video you are bottoming the spool valve spring and not turning.
it means either you are against steering stops or you dont have enough pressure to turn tires= orbital valve pressure relief valve is set too low or your pump doesnt make...