The Brakes broke the deadlock early on as Matt Stenson struck from the spot. Adam Dawson levelled before the break, with his first goal for the club - a terrific free-kick.
The Bucks went in front shortly after the interval, through a fine Andre Brown header. Brown then missed from 12 yards after Jamie Hood got himself on the scoresheet.
It means Gavin Cowan's side have finished August with four victories and three draws. They sit third in the embryonic table.