Help With Oil Leak

[MXRACER86]

I have a 2005 yfz450, it just started leaking oil, took forever to find exactly where from but i found that it is leaking from one of the bolts on the bottom of the motor that holds the cases together, the bolt is tight but is leaking oil, i was thinking i should fill the bolt hole up with silicone and put the bolt back in? im not sure what to do, I am open to any suggestions. I really don't feel like having to split open the cases to fix it.:(

[bwamos]

Just back out the bolt about 1/4". Put high temp silicon around the shaft at the bolt head and then tighten it back down. You may simply have a tear in the paper gasket on the inside edge of the bolt.

If that doesn't work, I'd remove the sidecover and inspect.