OK davec sounds like you are there what rpms are you getting now and what prop?? remember you want to run at the least compression without the miss you can tweek the needle now remember unlike a glow engine if too lean it will slow down and stop
also do NOT overcompress and try and compensate by running rich you should be within a half turn or so on both the needle and compression screw for a purrrrring engine, once you hear it running right you shuld be able to nail it each time with slight adjusments
welcome to diesel land martin