hi, i trade crude through proshares stocks UCO and SCO. recently my limit orders at the ask are only being filled if there is a tick down and then i am getting filled at a higher price. For example: 1. my limit order bid 5K shares x 10.50 ( current ask ) 2. others are getting filled at the ask. 3. price ticks down and ask becomes 10.49 4. my order gets filled at 10.495 if the price ticks up to 10.51 my limit order never gets filled and i miss out on the move. I've been trading this pair for 6 months and this has only started happening. My ETRADE "platinum" relationship manager has been looking into this for 2 weeks now and refuses to tell me why this has started to happen. Do i have a case against them? Thanks in advance for your help.