The home side dominated the opening 20 minutes, but paid the penalty for missing a hatful of chances as John Grant and Scott Davies sealed the win for the Shots.
A disappointed Jackson admitted: "That game was probably the story of our season, we could have been two or three up by half-time, but we did not
take our chances.
"We were desperate to get a result and probably created enough chances to win two games, but we did not take them.
"That has been our problem this year, scoring goals at home."