I think you should do it yourself or get someone else to do it. Be careful dropping jet sizes , you could seize it up. Have someone that knows something about performance mods diagnose your sled before you go and throw jets in it hap-hazardly. As far as idler wheels and sliders go if you have access to a garage and some basic tools you should be able to do that. If he hasnt got to your sled by now and he has had it a while he probably wont get to it so get it out of there and get it done by someone else.