Hi Alan,,,,,,, Another Jock

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How many miles are on the bike?. Could be a combination of things.
The susspension could be shot, and/or your tire pressures are a bit on the low side.
When was the bike last serviced, and what was done?.
Make sure the head bearings are smooth and the brakes are working freely, no sticking pistons.
The Trophy is a heavy bike for it's relatively small size and it does take concentration at slow speeds.