Despite taking an early lead through Reece Placid's deflected effort the visitors rallied and deservedly drew level when Phill Draycott curled home superbly.
The second half saw the Southern League side take control as Danny Watson slotted home following a defensive mix up,
The same player added a 3rd with 17 minutes left and despite a few near misses it wasn't to be Casuals night and the booked a trip to Leiston in the next round.