broke in my new bo1 this weekend. i was pretty worried about it because i wanted to have it ready to race for this weekend and it is such a tight motor. the last motor i had that was this tight took nearly 2 gallons before it would really run well. i am happy to say that even after only a half gallon, this thing rocks!! i currently have a 053 pipe on it but am planning to do some experimenting with pipes soon. i just knew that the track i am going to requires a lot of bottom end so that is what i started with. i can't wait to see what this thing can do after it drops it's nuts!!