I have a maytag MDB600AWW dishwasher. the...

I have a maytag MDB600AWW dishwasher. the top spray arm doesn't turn. it wouldn't even turn if i removed the to middle trays. I took the accumulator out and cleaned it. the fine mesh filters were clogged. unfortunately, birthday candles found their way into the machine sometime back. i cleared as much as i could. when i put it back together, the top arm would spin only when i had the 2 middle arms disconnected. It seemed there was an increase in pressure. i ran a diagnostics test and there were no errors. i figured if the pump was laboring it would throw an error. should i replace the accumulator completly? thanks