I have read a few things on here about the lack of power to keep Koma midgets running. What I think I have learned is that the earlier 20mm wide ones benefit by a different spring- 12x24. Mine is the 21mm wide version so I think that was done to increase the power so presumably no spring upgrade available? I have stripped examined and cleaned and reassembled and minutely oiled. It has about 120º swing and runs with the hands loose, but tightening and setting time seems to slow it to a halt.Is there anything suggested that will give it more energy,?
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