I am curious and have a question and there is probably a good answer which maybe someone here can answer. I have the 300CX FEL on my 990. I know that is what JD is presently distributing. It has cast iron masts which are made in China. I am assuming the other FEL's that are on the 102x series, the 2x20 series and 4x20 series have the same cast iron masts. I don't know if I am right or not but the JD FEL's which were sold prior to the present series appear to have been all steel. Am I correct in that? If so why did JD move to the cast iron (I am guessing I know why getting them from China)? Is there something better about having a cast iron mast instead of a steel mast? It just seems to me that all steel would be better and that cast iron would be more brittle but again I don't have any knowledge here. Just some experience where I have seen Cast Iron break where steel does not seem to break so easily.