RE: Webra Speed 50
Vern,
How did you perform the break-in?
[link=http://www.rcuniverse.com/forum/Tapered%2DBore_Engine_Break%2Din_%2D_Upgraded/m_1850473/tm.htm]This thread[/link] illustrates the right way. I know of one such engine that received too rich a break-in, which resulted in the sleeve peeling its nickel.