Bear with me this is a long one but worth trying if you feel unbalanced when jumping
I found that my right foot was kicking to one side every time I bounced two footed
Then I realised that my right knee was rubbing on the inside of the hoop
So I put a short straight edge against the ally support under the foot plate and found that the spring seemed to be to one side hard to explain but easy to try
Checked the left one and found it was well out the other way but that one seemed right so I tightened the side rods on one side and loosened the other side on the right hand PJ
This had the effect of moving the heel of the foot plate towards the inside of the spring
almost like magic I can now jump two footed easily where as before it felt very unbalanced