Scale levels not showing up

I'm trying to modify this TEMA indicator /algos/indicators/show/15 . As part of it I wanted to add in more levels on the scale. But I'm having trouble getting the levels to show up. They appear on some symbols and not others.

EG here:

https://puu.sh/jq11F/e467d70da7.png

It's working fine and the levels are showing up.

Then here on EUR/USD I'm getting the right line but no levels marked.

https://puu.sh/jq154/adb8dc004e.png

using System;
using cAlgo.API;
using cAlgo.API.Indicators;

namespace cAlgo.Indicators
{
    [Levels(0.001, 0.002, 0.003, 0.004, 0.005, 0.006, 0.007, 0.008, 0.009, 0.01,
    0, -0.001, -0.002, -0.003, -0.004, -0.005, -0.006, -0.007, -0.008, -0.009,
    -0.01)]
    [Indicator(IsOverlay = false, AccessRights = AccessRights.None, AutoRescale = true, ScalePrecision = 3)]


    public class TEMA : Indicator
    {
        [Output("TEMA")]
        public IndicatorDataSeries tema { get; set; }

        [Parameter("Data Source")]
        public DataSeries DataSource { get; set; }

        [Parameter("Periods", DefaultValue = 14)]
        public int Period { get; set; }

        private ExponentialMovingAverage ema1;
        private ExponentialMovingAverage ema2;
        private ExponentialMovingAverage ema3;

        protected override void Initialize()
        {
            ema1 = Indicators.ExponentialMovingAverage(DataSource, Period);
            ema2 = Indicators.ExponentialMovingAverage(ema1.Result, Period);
            ema3 = Indicators.ExponentialMovingAverage(ema2.Result, Period);
        }

        public override void Calculate(int index)
        {
            tema[index] = ema3.Result[index] - ema3.Result[index - 1];
        }
    }

}

Any tips on where I'm going wrong?