So I just got this CK20. It's around a 2010 model. When parked for a week it will drip out about a gallon of fluid. The previous owner said he thought a hefty stick went into a small opening underneath the trans and ruptured the seal. Also said it's been like that for about 5 years and he never wanted to split the tractor to fix it. Is this plausible or am I in for a bigger surprise? There is an opening about of almost an oval shape about 2 1/2 inches which slopes forward and slightly downward, almost like a small funnel "mouth". It's a great running tractor and I'm needing to use it 4 or 5 days a week...I'd really hate to split it if it's something I can fix from the topside and the repair manual that came with it does not address it Thanks in advance for your help!!