Manager Jim McIntyre was left to rue more slack defending as Dunfermline's winless run at home continued.
"We're gifting goals far too easily and until we stop doing that then we're going to struggle to win games," he said after the 3-3 draw with Aberdeen.
"I spoke about basics before the game and until we start doing the basics, like defending corners, we're going to be punished.
"There's no way we should have to score more than three goals to win a match."
Aberdeen were rewarded for a strong finish to the first half when Andrew Considine headed the visitors in front from a corner.
But the Pars hit back after the interval with goals from Andrew Barrowman, David Graham and Liam Buchanan.
Barrowman had a glorious chance to grab a second but saw his weak effort from close range brilliantly saved by Dons keeper David Gonzalez.
A minute or so later Alex Keddie had knocked in an own goal and Josh Magennis slammed in the equaliser on 88 minutes.
"We should have gone 4-1 ahead," sighed McIntyre.
"Credit the goalie for the save but Barra knows he should have scored in that situation.
"We showed a great reaction to losing a goal right on half time.
"I thought for 35 minutes in the second half we were excellent.
"But we were the masters of our own downfall. The three goals we conceded were all defendable.
"We work hard in training every day and we'll continue to do that but it's concentration that's letting us down and that comes from individuals."
Dunfermline's 3-5-2 formation left them vulnerable to Aberdeen's attacks down the flanks but McIntyre claims he is hampered by injuries.
"Systems are dictated by the personnel available," he explained.
"I don't have a recognised right-back available to me at the moment.
"When I have more players available it gives me further options."