H MJD:
Thanks for the additional info, you are absolutely on the right track ! Small "pylon like speedsters" are PEERFECT enviroment for a "better" MDS. The fact I tried to warn and point out is: The huge majority of those speed/resonanze contest type engines that the central organization produced had absolutely NO quality control. If you look at the serial number of your engine.. several hundred thousand ! The point was that it was just "raw material" for a working engine ! The young guys would go to the lathe and fabricate themselves something that would work ! No wonder there were so many different custom engines,and producers of such. When the skills were not enough for such work, the "free" engines ended in a vault and now pop up in Ebay, etc. When the Ukrainan factory started to export the MDS and especially the English importer forced some pre check on the ones they would pay and not send back, definitely usable MDS engines could be bought here in Europe. To say the truth, some of the mas produced Russian engines.AME-VAE etc. are of really good quality, especially since the russkis adopted state of the art production technologies such as CERAMIC plated Aluminum sleeves. One day, when their designs meet the western standards ( novarossi/Picco/CMB/ Nelson etc.) we are into a new revolution in model engine technology, provided, their appetite to sky high pricing (Profi, Kostin, Cyclon etc.) would not spoil the fun...