Not familiar with the spindle retention on your bike but is the front wheel spindle effectively pulling the forks together and making them bind ? IE Undo the front wheel spindle and try bouncing the fors a few times to see if that is the problem - would not expect new oil etc to cure sticky forks .

Where is the play in the rear suspension ? - often it can be worse in the shock mount , but check to see if there is just one bearing that is causing most of the play and look at replacing it with a standard needle bearing or getting a bush made up to suit - using a bit of Coke can to shim up the bush is frowned upon..........