Grimes' 12th minute header set the Pilgrims on their way against Wealdstone, who levelled 15 minutes later through Dylan Kadji's close-range strike.

Lenell John-Lewis was denied from the penalty spot by Dante Baptiste at the start of the second period - and Olufela Olomola and Jaydn Mundle-Smith both struck inside a madcap minute for the Stones to seal an away victory which had looked so unlikely earlier in proceedings.

The Pilgrims' afternoon got off to a dream start when Gavan Holohan floated a cross into the box from the right and GRIMES beat Baptiste to the ball to head home into an empty net.

Eight minutes later, United thought they had doubled their lead when Ken Aboh slammed the ball home after Baptiste had denied Lennon Wheeldon, but Steve Wade's offside flag cut short the celebrations.

Wealdstone levelled in the 27th minute when they kept a ball alive in the box and KADJI steered home from close-range to restore parity.

John-Lewis was denied superbly by an Aidan Francis-Clarke block, while Baptiste produced a terrific save to claw aside an Aboh header before half-time.

The Pilgrims were given the perfect opportunity to re-assert their lead four minutes after the break, when Kyle Smith handled Georgie Gent's cross from the left, but Baptiste brilliantly denied John-Lewis from the spot.

The visitors took full advantage and seized the lead in the 65th minute when Sai Sachdev was dispossessed for the ball to be squared for an easy OLOMOLA tap-in.

Matters got worse a minute later when MUNDLE-SMITH advanced to sail home a deflected effort off the unfortunate Sachdev.

John-Lewis hit the post within three minutes and ex-Stone Terrell Agyemang rattled the crossbar in stoppage time - but the visitors defended manfully to protect their hard-fought lead.

Boston (4-4-1-1): Louis Chadwick; Sai Sachdev, Jake Rooney, Jamie Grimes, Georgie Gent; Ken Aboh (Connor McBride 87), Terrell Agyemang, Gavan Holohan, Ollie Bostock (Jack Holmes 77); Lennon Wheeldon (Tom Cursons 70); Lenell John-Lewis. Subs (not used): Lewis Shipley, Connor Teale, Nicholas Pozo, Luke Faxon (gk).

Wealdstone (3-4-2-1): Dante Baptiste; Aidan Francis-Clarke, Connor McAvoy, Jaydn Mundle-Smith; Kyle Smith, Jack Wells-Morrison, Aaron Henry, Joe Newton (Jack Cook 46); Jayden Harris, Dylan Kadji (Dan Chesters 73); Olufela Olomola (Wilson Waweru 73). Subs (not used): Tyrelle Newton, Amaru Kaunda, Endurance Johnson (gk).

Referee: Lewis Smith.

Attendance: 1,612 (86 visitors).

PIC: Chris Bray.