re the rear cush drive,a cheap and common 'remedy'is to pack the originals with an old inner tube..

re the forks...check the torque settings on the front wheel clamps and axle.

Wouldnt hurt none to go round the bike generally checking for any loose bolts/nuts as these are big singes at the end of the day and do vibrate

Is the front tyre directional?...looks odd to me but then again...