Just got one,got it running yesterday.Question 1 it has Zenith VN carb Broke it down and cleaned it and lines yesterday and set timing.It runs very good...It doesnt have the piece that goes from the top of carb to the oil bath.It needs to be 2 1/4 inch at carb.Can't find a pic no where on net or in Shop Manual.The way the carb sets is higher than the oil bath..With the hood down a man cant just elbow a pipe to it.Need to find the piece or a pic.Mine is 63 model i think with Ser#2671....Question 2 Transmission got some water changing it takes 20 quarts..But not sure what kind..it smells very different..Thanks for any info.Going to like this tractor..little different from h,m,and 400