Как сгладить параллаксную прокрутку жестом смахивания

Я добавил классы жестов, доступные из примера, для поддержки распознавания жестов. У меня есть 4 спрайта на верхнем слое, которые нужно перемещать при свайпе влево/вправо, и 3 спрайта для свайпа на нижнем слое.

У меня есть следующий код

-(id) init
{
// Some Stuff
[Gestures sharedGestures].swipeTolerance = 40;
[Gestures sharedGestures].pointResetLimit = 10;
[Gestures sharedGestures].delegate = self;
[Gestures sharedGestures].useX = NO;
[Gestures sharedGestures].useCircle = NO;
[Gestures sharedGestures].useSquare = NO;
for (int i=1; i<6; i++) 
    {
        NSString *str=[NSString stringWithFormat:@"Howtoplay_0%d.png",i];
        topLayer[i]=[CCSprite spriteWithFile:str];
        [topLayer[i] setPosition:ccp(640/2,480/2)];
        [self addChild:topLayer[i] z:1];
        [topLayer[i] setVisible:NO];
    }
    [topLayer[1] setVisible:YES];
    [topLayer[1] setPosition:ccp(320/2,480/2)];

    for (int i=1; i<4; i++) 
    {
        NSString *str=[NSString stringWithFormat:@"HowtoplayB_0%d.png",i];
        backLayer[i]=[CCSprite spriteWithFile:str];
        [backLayer[i] setPosition:ccp((320*i)/2,480/2)];
        [self addChild:backLayer[i] z:-1];

    }
    [backLayer[1] setPosition:ccp(320/2,480/2)];
}

-(void) registerWithTouchDispatcher{
[[CCTouchDispatcher sharedDispatcher] addTargetedDelegate:self priority:1 swallowsTouches:YES];
}

-(BOOL) ccTouchBegan:(UITouch *)touch withEvent:(UIEvent *)event
{
[[Gestures sharedGestures] reset];
return TRUE;
}

-(void) ccTouchMoved:(UITouch *)touch withEvent:(UIEvent *)event {
    CGPoint point = [touch locationInView: [touch view]];
    CGPoint converted = [[CCDirector sharedDirector] convertToGL:point];
    [[Gestures sharedGestures] addPoint:converted];
}
-(void) swipeLeftComplete
{
    NSLog(@"Swipe Left Complete Called");
    [self MoveLeft];

}
-(void) swipeRightComplete
{
    [self MoveRight];
}
-(void)MoveLeft
{
    [topLayer[currentTop+1] setPosition:ccp(640/2,480/2)];
    [topLayer[currentTop+1] setVisible:YES];
    [topLayer[currentTop] runAction:[CCMoveTo actionWithDuration:2 position:ccp(-320/2,480/2)]];
    [topLayer[currentTop+1] runAction:[CCMoveTo actionWithDuration:2 position:ccp(320/2,480/2)]];

    [topLayer[currentTop-1] setVisible:NO];
    currentTop+=1;
}
-(void) MoveRight
{
    [topLayer[currentTop-1] setVisible:YES];
    [topLayer[currentTop] setVisible:YES];
    [topLayer[currentTop] runAction:[CCMoveTo actionWithDuration:2 position:ccp(-320/2,480/2)]];
    [topLayer[currentTop-1] runAction:[CCMoveTo actionWithDuration:2 position:ccp(320/2,480/2)]];
    currentTop--;
}

Я не могу плавно провести вправо/влево, это дает перекрытие верхнего слоя. Пожалуйста, помогите мне сгладить движение слоя.

Любая помощь будет оценена по достоинству

Спасибо...