I will pass the request for saw dust to Peter, but if it continues with persistent leaks, you need to use the 2-part epoxy method.  The product can be obtained from Aero Marine.  You additionally buy a large hypodermic syringe and large needle from a vet store and inject the mixed epoxy liquid in all the leaky places.  The product will work with damp wood.

Dieter Jung

Northern Lights Cedar Tubs.

PS. Email Peter (p[email protected]) you shipping address and phone # as well as paiyment method.  While the sawdust is free there is a shipping and handeling cost.

Dieter