Just don't grind down the backside of the throttlebody plate and you'll be fine.
You might want to check your local Checker/autozone/etc... for "Berryman Professional 3-Step Fuel System Maintenance Kit" (
http://www.berrymanproducts.com/Default.aspx?tabid=148)
It is:
step 1) TB aerosol cleaner
step 2) Manifold and combustion chamber cleaner, with vacuum lines and adapters
step 3) Fuel additive
I know Valvoline also makes a 3 step product, which none of the autoparts stores around here carry. My brothers shop uses that... but not sure if they charge $150 for it
