everybody just wants to make profit. thats how our world sadly works. but yeah, i dont think ANY kit out there will be without problems for more than 4 weeks straight. but lets see. i should get the engine middle next week and will tell you how mine is. if i see anything weird i want it replaced right away. thank you for the details.
my personal tip or opinion for somebody thinking about to build one of these bikes is: if you are not handy with tools and aren't a creative person, you will have lots of frustration with those cheap kits. but with some customization, they can be really fun. mine is used as a motorcycle now, everything heavy duty and reliable. lets see how the new engine runs and if it really got more power.