i have had some issues with my os speed engines.
idles great and all day,trow it onto the track and it runs great on top.
i have problem clearing small dobbles and tripples...clears big jumps with ease, as long as i have a couple of meters run up.
only issue is it gets richer on bottom when engine is run for 2-3 mins...feels like its getting richer anyway
have checked for leaks,new bearings checked for slop in setup.
hope i made myself clear?
anybody has any ideas?