Quantization Problem...Help Please

Here i'll repost my entire Design specs again, i think i'm losing you. The QMF filter bank, simply reconstructs the original Signal you input, but putting it through a series of decimators and interpolators. so the input and output should be the same with the exception of a delay.

N = 99;
 = firpr2chfb(N,.45);
% Analysis filters (decimators).
Hlp = mfilt.firdecim(2,H0);
Hhp = mfilt.firdecim(2,H1);
 
% Synthesis filters (interpolators).
Glp = mfilt.firinterp(2,G0);
Ghp = mfilt.firinterp(2,G1);
Hlp.arithmetic            = 'fixed';
Hlp.InputWordLength       = 11;
Hlp.InputFracLength       = 0;
Hlp.FilterInternals            = 'FullPrecision'; 
Hlp.CoeffWordLength       = 10;
Hlp.signed                = true;
Hhp.arithmetic            = 'fixed';
Hhp.InputWordLength       = 11;
Hhp.InputFracLength       = 0;
Hhp.FilterInternals            = 'FullPrecision'; 
Hhp.CoeffWordLength       = 10;
Hhp.signed                = true;
Glp.arithmetic            = 'fixed';
Glp.InputWordLength       =  22;
Glp.InputFracLength       = 0;
Glp.FilterInternals            = 'FullPrecision';
Glp.signed               = true;
Glp.CoeffWordLength       = 10;
Ghp.arithmetic            = 'fixed';
Ghp.InputWordLength       =  22;
Ghp.InputFracLength       = 0;
Ghp.FilterInternals            = 'FullPrecision';
Ghp.signed               = true;
Ghp.CoeffWordLength       = 10;