James Nolan's strike cancelled out an unfortunate early own goal from team-mate Habeeb Ogunneye in the first half, while Victor Musa was kept at bay both by the post and Leeds goalkeeper Rory Mahady at the end of the opening 45 minutes.
Our young Reds did take the lead just before the hour, thanks to a composed finish from Ethan Williams and substitute Gabriele Biancheri made it 3-1 when he finished inside the near post five minutes from time.
However, Leeds striker Ben Andreucci immediately pulled one back before equalising in stoppage time to deny United all three points in Yorkshire.