my 48 cub had bad governor and I purchased a used governor. I am having trouble timingbthe governor The mark on the governor gear is visible and I was told the marks on the facing the magneto were no unless you remove the magneto seal.I see two marks on the gear from the front side I installed the governor using those marks and the tractor does not start .I checked on utube and governor holes should be at 8:30 and 2:00 a clock my holes are at 10 and 3.The timing marks are wrong what do I do to get the ones of thr governor at 8:30 and 2 if remove the oil seal should I see the timing marks on the gear? How hard is the magneto oil seal to remove and replace. Any help would much appreciater