Edcat, here is the email they sent, I will PM the attachments or try to attach them here. AR.
Attached is a drawing showing how lag bolts can be sistered in to help reinforce the existing keel bolts. We typically recommend using 1/2" x 10" lag bolts equally spaced between the existing bolts. You pre drill with 27/64" bit and then screw in the lag bolts. The older boats had wood in the keel stub and some have found that the threads are ok in the areas were the wood was, when the wood is removed (only necessary if it has become rotten).
21200 Victory Blvd.
Woodland Hills, CA 91367
(818) 884-7700 ext. 237
(818) 884-3810 Fax
Yachts and boats for sale - Catalina Yachts