Hi folks,I've been looking around for any sort of DIY article that sums up the essentials when replacing the timing chain on a 617 eng. I have been addressing some deferred maintenance issues on a '78 300cd I picked up earlier this year with 270k mostly documented miles, and figured I may as well replace what I believe is the original the timing chain (have not checked stretch). I've replaced several timing belts on Audi's that I've owned in the past but never a timing chain, so I have a few questions:

1. Aside from the MB tool for crimping the new link (and a dremel for grinding off the old link), is there anything else you recommend I should have before attempting this procedure (not considering the typical tools all DIYs have, which I obviously do)?
2. Is there any recommended procedure for rolling in the new chain? For example, would you suggest using the vice grip method, which is slow/arduous but probably more exact, or suggest doing it with a helper to 'guide' the old chain out and new one in while turning the engine?
3. Most importantly - is this one of those procedures better left to the pros?

Thanks!
Note, chain & tensioner will be sourced from Phil.