How many miles since last checking the pressures ? Could be unusual tyre wear due to incorrect pressures....I would run it as it is for a couple of hundred miles until the tyres are wearing normally. .....strange things tyres
swinging arm bearing play is undetected till loadedalso try going up 1 click on preload this will make the rear harder and place load on the front
i have used the ones from simply bearings of ebay but try the preload as its free to do before buying bearings