new shaft packing stress

[dory24]

packing was perfectly cut, it sat in the nut nicely with a special homemade tool, 3 wraps offset by 1/3 and then to tighten. turned by hand till i felt some Resistance and that is as far as i was told to go, dont think its enough. i know if ya over tighten its going to bind and burn the shaft, but how loose is to loose . im sure its not going to leak alot when i drop her in and adjustments are easy and need to be done after running her for a couple hour but man the smallest things get me so stressed