I have a 1941 JD A that I restored 20 years ago. I have used it about 5 to 10 hours per year planting and cultivating sweetcorn. Since the cold weather has set in, I have been cleaning and fixing minor things on it. I have noticed that I am cleaning allot more grease and grime around and on the flywheel side of the tractor. I suspect it is from oil slinging from the flywheel oil slinger seal. I checked and found that there is .020 back lash on the flywheel. (side to side) I think it is supposed to be .010. Is it worth the trouble to reset the back lash on the fly wheel? Do those old slinger seals throw a little oil anyway?