Monacelli 2005 help -- blanchard kahn conditions

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I'm trying to estimate Monacelli (2005), Monetary Policy in Low Pass-through Environment with a few modifications (Taylor rule). I keep getting Blanchard-Kahn indeterminacy unless I make foreign output exogenous. I've been struggling with this issue for days and would really appreciate it if someone could take a look and point me in the right direction. Thanks!

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There are 4 eigenvalue(s) larger than 1 in modulus
for 5 forward-looking variable(s)

The rank conditions ISN'T verified!

??? Error using ==> print_info at 42
Blanchard Kahn conditions are not satisfied: indeterminacy

Error in ==> stoch_simul at 46
print_info(info, options_.noprint);

Error in ==> mymodel at 226
info = stoch_simul(var_list_);

Error in ==> dynare at 132
evalin('base',fname) ;