I would stay away from the Lucas. It is like STP and is sold in Automotive stores.
Dave swears by it but it is too sticky for me. Just use steam oil.
Five turns seems like a lot.
You should not have had to adjust them at all. If you had moved the eccentrics 180 degrees, you would have had it running in forward as it was in reverse before.
If you went too far or not far enough buy just a little bit, it would have made a big difference in the performance.
Page 6 & 7 of the kit instructions will show you to set things up again.
If you don't have them, I can post them here for you