volcano s30
 

so my central tranny went out on my s30, and so i went through urc hobby to get a direct drive, works good but its a 44t spur gear, and all my power on my truck is gone, its like its set up for the street now and will barely go through the grass, dirt without really haven any power, even when you open it up on the road its like the motor is bein held bak, i guess what my question is what would be a good size gear to go with, or should i jus go bak to the original transmission with all the idler gears in it?? One of the gears stripped out in the stock tranny, so i jus bought a new one the direct drive cuz i didn't want to deal with it. So someone please give me some info on the correct way to go,
thanx
larry