Mike its probably in the piston removal section since Triumph wants you to pull the liner to change a piston. I used a Honda version of the three bond listed in the manual. this was on my first piston change out. Now I leave the liners in unless they are damaged. There is not gasket or shims just the bore and the shoulder where you apply the sealant. If your not going back on with the head right awa Iwould use something to hold the liners down while the sealant is curing.
I used T-bolt hold downs and the old head bolts.
Here is a shot of the liners
and the block with them out
hope this helps