I hope I explain this in a way that makes sense… I tried drilling a small hole (for drywall screw method) in the seal last night - but the metal shavings from drilling the hole had me stop almost as soon as I started. The seal its self is a metal cup with a rubber outer coating and flange that sits up against the block. The seal (at least in my tractor) will slide into the block far enough that the rubber flange no longer seals - there is about a 1/8" gap between the outermost edge of the seal and the very inside lip of the block. Through this gap I saw the possibility of small metal chips/shaving falling down into the block - so I stopped drilling. I guess it is possible that the PO used a seal of the wrong size/type. It looks like the one I got in the gasket kit, but I can't do a side-by-side until I have the old one out. The existing seal pushes into the block when you press in on it to drill the hole. It can't fall down inside as the crank shaft passes through it, but, at least in my case, it pushes in enough past the area on the block it should seal against that something could easily fall down inside. That's why I posted, I was thinking there might be a better method.
Hope this helps,
-Calvin
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