The former Chelsea, Sunderland and Woking forward was the star of the show scoring a spectacular 25-yard volley and a 20-yard free kick in successive minutes.
All this came after George Gregorio had opened the scoring for the host side and struck the underside of the bar. After Walker's brace Mark Thomas made it 3-1 with a fierce strike past Steve Hilton.
In the second half Molesey were in control and duly struck a fourth just past the hour when Phil Dean was given the chance of a simple tap in from close range.
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