I've been modding / flashing for the last few years (I am a computer repair technician by trade) and I wanted to offer my services on xbox-scene which I've been a member of for some time.
I'm based in Portland, OR so if you're in the area that's best (I can do outside fixes/flashes for an additional $15 for shipping), I run my own shop out of my home office and can have you up and running with about a 1-2 hour turn around (or next day). I'm able to flash slims or phats and also offer RRoD repairs, I used the Hybrid Ultimate X-Clamp kits and I also have a professional re flow station.
Flashes on all drives are $40
RRoD repair is $60 for x-clamp fix or $80 for re-flow service. All my work comes with a standard 30 day guarantee. Please feel free to PM me if you have any questions or comments! Thanks!