Turek benchmark FSI3 benchmark problem: Large displacement deviation

Hi, Makis
The Calculix FSI2 example here is not available for download:Turek-Hron FSI 2 Benchmark

I have modified my discrete scheme, but it is still far from the standard result. Do you have any better suggestions? This is my fvsolution file and fvscheme file.

   ddtSchemes
{
    default         backward;
}

gradSchemes
{
    default         cellLimited Gauss linear 1;
}

divSchemes
{
    default         none;
    div(phi,U)      Gauss linearUpwind grad(U);
    div((nuEff*dev2(T(grad(U))))) Gauss linear;
}

laplacianSchemes  
{
    default         Gauss linear limited 1;
}

interpolationSchemes
{
    default         linear;
}

snGradSchemes
{
    default         limited 1;
}
FoamFile
{
    version     2.0;
    format      ascii;
    class       dictionary;
    location    "system";
    object      fvSolution;
}
// * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * //

solvers
{
    p
    {
        solver           GAMG;
        tolerance        1e-6;
        relTol           1e-5;
        smoother         DICGaussSeidel;
    }

    pFinal
    {
        $p;
        tolerance       1e-07;
        relTol          0;
    }

    pcorr
    {
        solver           GAMG;
        tolerance        1e-5;
        relTol           1e-4;
        smoother         GaussSeidel;
    }

    pcorrFinal
    {
        $pcorr;
        relTol          0;
    }

    phi
    {
        $p;
    }

    "(U|cellDisplacement)"
    {
        solver          smoothSolver;
        smoother        symGaussSeidel;
        tolerance       1e-8;
        relTol          1e-6;
    }

    "(U|cellDisplacement)Final"
    {
        $U;
        relTol          0;
    }
}

PIMPLE
{
    nOuterCorrectors 50;
    nCorrectors 2;
    nNonOrthogonalCorrectors 1;
    //tolerance 1.0e-12;

    correctPhi          yes;
    //relTol 1e-4;
    //pisoTol 1e-6;
    consistent  true;

    residualControl
    {
	    U
    	{
    		tolerance 1e-5;
    		relTol	  0;
    	}
	    p
    	{
    		tolerance 1e-5;
    		relTol	  0;
    	}
    }
}
PISO
{
    nNonOrthogonalCorrectors 1;
}
potentialFlow
{
    nNonOrthogonalCorrectors 1;
}