Had a buy stop order on IB 'ideal' forex 14k USD.JPY 77.085 filled at 77.2: 11.5 pips slippage plus commission. I understand IB charges a premium on ideal of a couple of pips over Ideal Pro, but 11.5 pips.. that's $20 slippage + commission on a small trade. Oanda, my other broker filled the same order at 77.9 for which they charged no commission. Question: can this trade be contested and the slippage reclaimed from IB? I understand it's a small sum but that kind of slippage adds up over many trades. I'm trading multiple systems with wide stops and need to keep risk under Ideal Pro minimums. Thanks in advance.