Welcome aboard! Some advanced spring theory here:
https://donkeykongforum.net/index.php?topic=492.0You may not be ready for all of that, but the visuals there give you a good sense of where the springs CAN land.
I taught my friend, who recently broke 150k, the "balls-balls"/"balls-foot" technique, referring to the position at Kong's body of the first and second spring.
When you're running toward kong to get to the safe spot on the left of the ladder, you want two springs in a row that land under his balls. Start running on the first spring to land at his balls, and watch for the second. If it lands at his balls, keep running. If it lands at his foot, run back, rinse and repeat.
From the safe spot left of the ladder, when running to the ladder - run on a spring that lands at his balls and watch for the second spring. If it lands at his foot, keep going. If it lands at his balls, run back...it will hit you on the ladder.
Hope this helps, and good luck, sir!
if you have specs on the joysticks coming in your arcade cab, post them and we can probably help you find the 4-way restrictor for it.