Back to re-torquing. Some things I forgot to mention, Torgue in at least three stages. Don't go to full torque on the first pass. On the Enfield cylinder head start at 8#, then 16, then 24. Go in a star pattern. don't go around in a circle. If you have the time and patience four passes at 6,12,18,24 would be better. Wait 1/2 hour and re-torque to 24 again. Let sit over night, then torque at 24# again. now proceed with the rest of the assembly. The rocker caps are done the same way -an X or star pattern in at least 3 stages with a 1/2 hour wait for a re-torque. you won't need to wait over night for another session.