Hi TwoArrows, and a warm welcome to the forum. grin It's always great to have another Scott Bonnar owner on board.

Unfortunately, info on the SB Model 40 is pretty thin on the ground and I can't be much help to you. However if you scroll back to post # 18974 you will see that Mik has a manual and spare parts list for your machine. Just click on his username, scroll to "Send a PM" and post your questions, he may be able to send you a copy and supply gasket info.
PLease let us know how you get on... wink
cheers2

Please do not PM me asking for support. Please post your questions in the appropriate forums, as the replies it may receive may help all members, not just the individual member.
Kindest Regards, Darryl grin