I need to do something to avoid horrible bouncing I have...
If you mean up and down, here a few tips. Whenever renewing the front tyre, have a close look at the rims inside where the wall of the tyre sits. Often crusts of rust are overlooked causing a tyre not to sit a 100% evenly. Tyre could develop a flat spot during long periods of inactivity like hibernation. Stiction is often caused by incorrect mounting of the front legs. I was told that 'unrest' in front often has its cause in the rear.
