Не приходят свечки если один и тот же инструмент использовать в двух WeightedIndexSecurity

private const string _secCode1 = "GZM5";
private const string _secCode2 = "LKM5";
private const string _secCode3 = "SRM5";

private CandleManager _candleManager1;
private CandleManager _candleManager2;
private CandleSeries _indexSeries1;
private CandleSeries _indexSeries2;

readonly TimeSpan _timeFrame = TimeSpan.FromMinutes(1);

private ChartArea _area1;
private ChartArea _area2;
private ChartCandleElement _candlesElem1;
private ChartCandleElement _candlesElem2;
...
_area1 = new ChartArea();
_area2 = new ChartArea();
_chart.Areas.Add(_area1);
_chart.Areas.Add(_area2);

_candlesElem1 = new ChartCandleElement();
_area1.Candles.Add(_candlesElem1);
_candlesElem2 = new ChartCandleElement();
_area2.Candles.Add(_candlesElem2);
...
_candleManager1 = new CandleManager(_trader);
_candleManager1.Processing += DrawCandles1;
_candleManager2 = new CandleManager(_trader);
_candleManager2.Processing += DrawCandles2;
....
///Регистрация QuikTrader как ISecurityProvider
ConfigManager.RegisterService<ISecurityProvider>(_trader);
...

_indexInstr1 = new WeightedIndexSecurity() { Board = ExchangeBoard.Forts, Id = "IndexInstr1" };
_indexInstr1.Weights.Add([b]_instr1[/b], 1);
_indexInstr1.Weights.Add(_instr2, -1);
_indexSeries1 = new CandleSeries(typeof(TimeFrameCandle), _indexInstr1, _timeFrame1) { BuildCandlesMode = BuildCandlesModes.Build };

_indexInstr2 = new WeightedIndexSecurity() { Board = ExchangeBoard.Forts, Id = "IndexInstr2" };
_indexInstr2.Weights.Add([b]_instr1[/b], 1);
_indexInstr2.Weights.Add(_instr3, -1);
_indexSeries2 = new CandleSeries(typeof(TimeFrameCandle), _indexInstr2, _timeFrame1) { BuildCandlesMode = BuildCandlesModes.Build };
...

_candleManager1.Start(_indexSeries1);
_candleManager2.Start(_indexSeries2);