Re-installing damper on 383.

I’m at the point where I need to reinstall the damper on my 383 after making some upgrades. I used a puller to get it off with no probs. Should I just pony up and buy the correct install tool so I don’t damage anything? I have also been reading and many say to lightly grease up the end shaft it will slide onto. Also some are saying to put a small amount of rtv silicone on the keyway to prevent any future drips. Is it best to measure how far the damper will slide on and tighten to that point or just press on with the damper installation tool until I reach the suggested ft-lbs? What is the suggested ft-lbs for factory damper installation? If I do buy a tool I’m want one that has some adaptability and doesn’t just fit b/rb mopars.
Carl