EASYTIGER: I agree there are O&R's & O&R's & any modifications or missing parts can turn them quickly into a parts engine . Some of the smaller ones I never knew what I had until I took them apart to see what ID was on the crank or rod . What made me wonder about RAS's engine is the size of the timer , seems large? And some 60's were not marked. What do you think . As far as the new RCU , I figure it is about the same as a new eating place in town . They will all try it for a few times & if it don't live up to expectations they will just go some where else . Always a new one just around the corner ! MAX H.