Have labels fill axis - Core-plot

Question

Hi, I am attempting to write an application with core-plot that will scale the y-axis values between the smallest value and the largest value. This part works well, however when these values are drawn on the y-axis line, the values do not take up the entire length of the y axis.

Statement to set up y-range:

 plotSpace.yRange = [CPPlotRange plotRangeWithLocation:CPDecimalFromFloat([self getYBottomValueWithOffset:0]) length:CPDecimalFromFloat([self getYTopValueWithOffset:0])];

Method to set up y-axis views

    -(void)configureYAxisForGraph:(CPXYGraph*)graphForAxis{

 CPXYAxisSet *axisSet = (CPXYAxisSet *)graphForAxis.axisSet;
    CPXYAxis *y = axisSet.yAxis;
    y.minorTicksPerInterval = 0;
 y.labelOffset = 0.0f;
 y.labelingPolicy = CPAxisLabelingPolicyNone;
 //set the starting position of the x-axis
 y.orthogonalCoordinateDecimal = CPDecimalFromString(@"0");
 y.title = kYAxisTitle;

 y.titleOffset = 60.0;

 int yRange = [self getYTopValueWithOffset:0] - [self getYBottomValueWithOffset:0];

 NSMutableArray *customTickLocations = [[NSMutableArray alloc] initWithCapacity:yRange];

 float sample = ([self getYTopValueWithOffset:0] - [self getYBottomValueWithOffset:0])/kSampleRate;

 for (int x = 0; x < (kSampleRate + 1); x++) {
  [customTickLocations addObject:[NSNumber numberWithFloat:((x*sample) +  [self getYBottomValueWithOffset:0])]];
 } 

 NSMutableArray *customLabels = [[NSMutableArray alloc] initWithCapacity: customTickLocations.count]; 

 for (int i = 0; i < [customTickLocations count]; i++) { 

  NSNumber *tickLocation = [customTickLocations objectAtIndex:i];

  //only show every second label
  if (i % 2 == 0) {
   CPAxisLabel *newLabel = [[CPAxisLabel alloc] initWithText:[NSString stringWithFormat:@"%@", tickLocation] textStyle:y.labelTextStyle]; 
   newLabel.tickLocation = [tickLocation decimalValue];
   newLabel.offset = y.labelOffset + y.majorTickLength; 
   [customLabels addObject:newLabel]; 
   [newLabel release]; 
  }
 } 

 y.alternatingBandFills = [NSArray arrayWithObjects:[[CPColor whiteColor] colorWithAlphaComponent:0.2], [NSNull null], nil];
 y.axisLabels =  [NSSet setWithArray:customLabels]; 
 y.majorTickLocations =  [NSSet setWithArray:customTickLocations]; 
 y.masksToBorder = YES; 
}

Thanks,

William