On a scale of 1-10 how hard is it to replace the front shock dust seals and oil seals?  [re-jetting is a 5].....Any words of wisdom from those who have already done this mechanical feat? I do have access to an air impact 1/2" wrench...my question is that this gun is rated at 200 ft/lb...to much power?

thanks for any tips

I'd say its a 6 or 7.  
The impact wrench is useful because it jerks the damping rod bolts loose, not that they are all that highly torqued.

You shouldn't need an impact wrench.
Just a nice leverage bar or a torque wrench and some arm strength.

The only bolt I could see taking an impact wrenc too would by the bolt on the underside of the forks.  But with the nice "tool" that a few folks on here thought of (2 10" bolts connected by a couple nuts...) works great.  I just changed mine and other than figuring out that I even needed this bolt-bolt tool, it was really simple.  Oh yeah - measuring the oil that goes into the forks is also a little tricky...  

I also noticed my fork oil was a THICK metalic and shiny fluid before I changed the oil and seals.



Rolly

To see what Rolly is talking about, go to the thread Bad Day Wrenching on the GS.

Check out the pics about 1/3 of the way down the first page.  They will give you a GREAT idea of what you're up against.  Keep scrolling down to see the alternative tool design that I came up with, to do Richard's forks.  Now that I have the tool, one of these weekends I'll tackle my OWN forks.

PS - Don't stop with my pictures; keep scrolling down.  KevinC and others describe / endorse a no-special-tool method which may work for you.

I use one of these to measure out the 377ml (or cc's) of fork oil that I need:

http://www.escondidocyclecenter.com/Item/RatioRite-Cup.htm