I didn't use sealant with the gaskets. Book called for 35 foot pounds torque on the back plate bolts. I had only torqued to 25 foot pounds and was afraid any more would break the bolts. Went back upstairs and looked at the service manual and saw inch pounds. Thought I had really over torqued them. I knew that the inch pounds were for engines other than the 149. I guess I just had another senior moment. Why I had the manual upstairs and not down stairs is another senior moment. When you are old, you always have something to blame it on.
It really pressed the gaskets to the engine and when I was removing the back plate It tore the gaskets up. I was not paying close enough attention. When I did look at the gaskets, they were torn in half. New gaskets are on order and hopefully will be here by Friday. Have a great day.
Bob