Hi ODD,

While the S9154 is a good servo, it might not be the best for the Integral wings since they come prepared for standard size servos. In my two Integrals (both EP) I installed S9550 in the first one and the successor S9551 in the second one. The S9551 will fit directly into the servo opening whereas you will have to sand the edges slightly for the S9550 because it is slightly larger. If you were to fit the S9154 you would probably have to cut out the existing servo mounting completely to make a hole large enough for the S9154. The S9551 is easier...

Also I find that the S9154 has quite a bit of play in the gears from the beginning. I have used around 10 of these servos in the past in different models, and they all seem to come that way. The S9550 and S9551 come with significantly less play, and seem tighter overall. Also they have metal gears where the S9154 gears are plastic.