I have fireball a arms and swing arm! Top notch quality for sure! They are also AMAZING people to deal with! Between fireballs products, and customer service, they have my vote hands down!
Pilot sounds small to me. Like mentioned above. Try playing with the pilots. If that does mot fix your problem adjust your needle. Just start out rich and work your way down.
X2. Not to bash any builder.( they all provide great serices) BUT! It is easy to make claims. Cameron(redline) dynos and backs up his claims. He build a cub for me, his initial claims were actually over achieved by his testing and willingness to make chances to porting and domes design after the first dyno session of the motor. Cameron is the an outstanding guy that is not afraid to go above and beyond to make customers COMPLETELY satisfied!
i have a 10cub built by redline. The motor made 111hp59tq. I had cameron do his pro mod trans and the thing shifts like butter! I can stay pinned and just flip the clutch and it shifts with ease! Im not a drag racer so cameron steered me away from the over ride
Another thing to be aware of since you apparently dont have tons of cash is, you will for sure be needing a rear shock. Once you go with an 8" or longer arm, the stock shock is useless.
If your on a tight budget extend your stock swing arm. Other then that, ya might wanna look at ebay. Pretty sure you can get what your looking for brand new, for 275-400.
I have the footpegs/heel guards. They have fresh gloss black powder coat. I also have the plastic pieces as well. Pm me your number and i can text pics.
If a stock bike feels that is has more tq then your 421 serval, then you have problems! Is your serval cylinder as cast? Or is it ported? Either way, your bike should feel leaps and bounds stronger then a stock bike with pipes.