as much as i like & race k&b's, they only seem to support the .21's. the other motors might as well be obsolete.......k&b hasn't updated any of their engines or designs since about 1902 :huh: , so producing dated stuff really wouldn't help a lot. mecoa should bring these engines up to date, & be competitive or give them up, imho. not supporting us, the customer is just making it worse, because if they ever do bring the k&b line back properly, there aare a lot of folks that won't go back to them, due to what they are (or aren't) doing now. if you have k&b's, & like them, buy everything you can, new or used.