wow thank you so much the proplem was in effect the Direct Conversion!!!!!! i doesn't understand it work whit the charged particel and not whit thermal power sic!!!! thank's everybody for the answer and for give me a little piece of thermodinamic!!! just another question...... but the B9 is compatible? because if i use only B9 the S2 W adapter will be ....ched in FLO,structural etc (and set the quantity of propellent) but if i install also Interstellar by freethinker the switch is broken...i can only switch the propellent but the tank is empty and i can't set the propellent's quantity... is only my problem?