[b]Chris:

As Jim said, don't put any LocTite on any screws in a Saito engine. RTV, as he said, is fine.

Leaking around a cam box screw? And running out the front in great amounts? I'd take a close look at the crank case vent, suspecting it to be plugged. Even with an open front bearing there should not be a great amount there.

On the bearing itself - note that "Shielded" and "Sealed" bearings are not the same. A shielded bearing has one or two metal covers on the side, these will still allow air flow through the bearing, and an amount of oil to escape. A sealed bearing has one or two rubber seals, when working properly they allow no flow through the bearing.

Your front bearing is a number 608, dimensions 8x22x7 mm. As a shielded bearing it's a 608-Z, with a double shield it's a 608-ZZ. For a sealed version the number is 608-RS, or with a seal on each side it is 608-2RS. If you get the single seal or sing;e shield install the bearing with the seal/shield to the outside. A double shielded bearing can be installed either way. If you get the double sealed bearing pop one seal out, carefully please, and then install it, again, with the seal to the outside.

The rear bearing is a 6902. If you get either a sealed or shielded bearing for the rear, remove them. The rear bearing should be an open bearing.

Yes, you can probably get them locally, but RC_Bearings.com gives excellent service and prices.

Bill.