Hi there.  I am a newbie on this forum, in fact the only Olivers that  I have are 1-16th scale.  One is made by Scale Models and the other I made myself.  The Scale Model tractor is a 70 on full steel wheels and the one that I made is a Super 88 on rubber.  I have plans to build more but am having health problems at the present so plans are on hold for now.  I am 76 years old so the 1-16th size is really all I need.  Mainly I will be just eavesdropping here so don't mind me.   Richard