Poli and DT plus everybody else -thanks for the input. Hopefully the changes will help. Going from a steel 910 gram stock bearing size rod to a GRP 6.8 long aluminum 2.100 bearing should lower the bob eeight some, and piston coatings should help? Skirts for sure and i may have the domes done as well. The only other mod will be a better piston pin which i understand helps in a couple of ways.