Kevin Bond admitted QPR paid the price for not taking their chances in a goalless draw with Blackburn.
Harry Redknapp's side could have gone clear at the top with victory but dropped points at home for only the second time this season and are now behind new Sky Bet Championship leaders Burnley on goal difference.
This term Rangers have developed a happy knack of grinding out 1-0 victories from similarly uninspiring matches, but their goal touch for once deserted them with Matt Phillips and Charlie Austin squandering second-half opportunities to win it.
Phillips was denied by Simon Eastwood from six yards out and Austin somehow hit a post and then the Rovers goalkeeper from similarly point-blank range.
"In the end it was frustrating," admitted assistant boss Bond.
"It was a game of few opportunities but we had two really good ones and obviously it's a different game if we take them.
"We are a very attacking team but we found it difficult to break them down."
Rangers are awaiting a work permit for former Chelsea and Liverpool midfielder Yossi Benayoun, who has agreed to join the promotion chasers.
And Bond feels the Israeli could be the man to help Rangers unlock stubborn defences over the second half of the season.
"We are defending well and we are keeping clean sheets, but on the other side of it we are not creating or scoring enough," he added.
"Yossi's a good player and you'd like to think would thrive in those situations."
If the second half belonged to Rangers it was Rovers who should have gone in at half-time in the lead.
Jason Lowe was denied by a goal-line clearance by Clint Hill and Chris Taylor headed over from close range.
Manager Gary Bowyer said: "We came with a game plan, we were very good in the first half and we should have gone in leading with the chances we had.
"In the second half we had to show some character and we displayed some battling qualities against a top team."
Eastwood was handed his league debut after Bowyer axed regular number one Jake Kean following some recent costly blunders.
And the 22-year-old rewarded his manager with a stunning, if slightly painful, save to keep out Phillips' close-range effort as Rovers kept a first clean sheet on the road this season.
"Our keeper made a world-class save so I'm delighted for him," added Bowyer. "It hit him in the face, but he stayed big.
"Today we've shown we can do it. Everyone did their jobs and we can build on this now. It's a first clean sheet away and that will give us confidence."