| Whenever you disturb the supply lines, oftentimes some debris gets caught in the strainers found at each of your sinks. Try removing and cleaning them. While they are off, turn on the faucets and flush the lines thoroughly.
If this doesn't help, there may be debris caught in your shutoff valves or they may not be turned on all the way. Pressure will build up, regardless of the size of the opening, but when flow starts, it will reduce. Have a look at the main shutoff at the water heater, it may not be on all the way.
There is definately an obstruction somewhere. | 
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