Where are you and what frequency band are you using ?
Those receivers normally work fine with Futaba Txs. Do you have the correct Hitec crystals in the Rxs ?
Do the Txs work correctly with any other Rxs ? That's surely the first thing to check. I've heard of some initialisation problems with the 9Z modules though mainly when used with Berg Rxs. And of course the Hitec Spectra module isn't designed to be used in a Futaba Tx so if it ever did work that would just be good luck (and if you're in the US on 72MHz it's technically illegal to use a module from a different manufacturer in a Tx).