I have mounted one more 2,5*5*8 bearing inside the gearboxs, at the opposite side off the 310242 gear. And changing the 310243 spaser white two TD 714001 CRUNCH SPACERS. (Maybe a 0,1 shim also to make also)
I also opened the the gearbox with an 8mm drill, for the new ballbearing. The gearbox hase been maintenesfree for a very long time, and with no gearbox nois.
I can make some picts later.
http://www.oople.com/forums/showthread.php?t=108680