I am looking for a new buggy engine for the next race season. I am a fan of OS Engines (especially the Ninja JXB01a), because they had excellent quality, were easy to tune and delivered many gallons of runtime.
But now I want to try a Nova mill for the first time. I canīt decide between the Plus4BTT and the old Plus4C Team
A friend, who drove many of the old Plus4, said they had some quality problems, so one engine is awesome and the next is total crap. Is this true and maybe fixed with the BTT? Maybe houston has some information about this.

Regards Chris