Case 580 super L loader issues

[Rt4020]

I have a 580 super l and letting the front bucket down it shakes the whole tractor the higher the rpm the worse it is, if I lower it very slowly and low rpm it doesn't shake any ideas?

 

[Tinkerer]

Powering it down or with the quick drop (float) position on the control lever ?
Extend the cylinders all the way they will go and check the rods with a straight edge. You may have bent one.

 

[Rt4020]

No I’m just lowering normal after lifting something or dumping a bucket doesn’t seem to do it as bad if u role your bucket as you lower it! I’ll check them and see if there bent.