Alloy wheel repair in Denver area?

[Dave]

I am nearly finished reviving the dead 4000S I bought 
to replace my departed 4KSQ.  It has some funky 16" 
alloy wheels that I will probably leave on it for now because 
they are equipped with practically new Goodrich 40 series 
tires.  The front wheels have some serious curb damage 
on them but they appear to be straight, just scraped.
Does anybody know of a shop in the Denver area that can 
build up the aluminum and machine it back down so that 
they look more presentable?  For that matter, I could
probably do the finishing work with a file and sandpaper 
myself.  
Thanks,
Dave
PS: The wheels can stay, but that 4" exhaust tip is coming 
off as soon as I find my hacksaw.