Do you already have your machine set to slow, or are you able to keep it running slow and steady with the foot control? That takes a lot of practice and I'm still not great with it.
If you go to Harbor Freight (or Lowe's or whatever) you can buy a router speed control for about $20.
http://www.harborfreight.com/router-...rol-43060.html
Plug the machine into the speed control, plug the speed control into the outlet and set the switch to "Var." (variable) Turn the dial to the high end of slow and with your machine un-threaded, push the foot control all the way to the floor.
Turn the dial up or down until the machine is running as fast as you want it to run. Thread it up and put a practice piece in there and see if that works well. If the stitches are still piling up, turn down the speed control. If they're too big and you feel like you're crawling along, turn it up faster.
Find a comfortable speed for you - you won't feel out of control and you won't feel like you are getting bored waiting for the machine to catch up with you, either. :)