the 7.4 high voltage servos are not what they are cracked up to be. they pull alot of voltage. i run the savox servos now and have to charge the 7.4volt receiver battery after 2 heats an practises. first time out with them i ran all day an made 1 lap in the amain and it went too low to work. i run outlaw 8th latemodels. so after every 2 heats i have to charge it back up. now when i ran the futaba 9350/9351 servos, i could got 2 weeks without charging the 6 volt lipo or nmh pack. something to think about for you. i got use to it because i also fly airplanes too. i do have 1 9350 and 2 9351 servos left for $50 apiece if you are still looking to get good ones.. 9351's are still in my mugen buggy..just pm...