hi james if only money grew on trees we wouldnt have any problems at all (my grandkids think its free at the a.t.m.)will follow with interest this topic still havnt made my mind up will have a look at panzerkettan to see what our fellow europeans are doing if i could find a source of metal gears i would build my own but the price ive found so far puts a stop on this its usualy cheaper to buy a complete gearbox unless you know of somewhere these are obtainable at a reasonable price



best regards pete