Andy,

     Thanks for the info.  I used to get the HPOCA magazine when I had my 18-36,  but I sold it a few years ago (it's a long story,  I really want an 18-36 but the seller really socked it to me on that paticular tractor,  so I was happiest when the black berries had grown over it and I could no longer see it...  now a retired machinist has it and is giving it the TLC in needs and deserves)

     Anyway,  I guess I will re-join so I can have the resources I need to get the OC-4 going.   

      From the sounds of things the OC-4 was not the most popular of the Cletrac's??  Is seems like there are a bunch of OC-3's out here.   

                                    Chris