Yes tornitore l agree with you ,the gears look a bit hit an miss ,as for the bearings l am going to use a mixture of metric an imper ones and with luck sort it out as l go,going back to the gears l intend to use 16 dp for the bull gear set up,thou l am not in to deep yet with the model but make a couple of bits as a change from my steam tractor ,plus have been given a book an plans of a steam donkey engine by W M Harris so have been gathering bits for that as well ,yep l know to many projects at once,but do find that if you have more than one on the go there is always something to do while waiting or saving to buy metal etc.