Yup, vaccuum. We had a neet little one that attatched to the air compressor hose, put Paris Hilton to shame. Or are you talking about the lifter valley? Either way, suck it out. It isn't a bad idea to run a strip of 2" painters tape over the intake ports on the heads while you're farting around in there, just to keep anything else from slipping in when you're not looking. Painters tape, the blue stuff, doesn't leave any residue. Two or three layers and you're good. The screw will have to be extracted, and it isn't something I've ever personnally had to do so I won't advise you on it. I have seen guys drill them out, but if the bit walks you're in trouble. They use an awl or punch to get a positive center dent to work out from, and hardened, super sharp bits at low speed starting real small (like 1/16", working in steps to bigger ones), you should be able to get it out in peices... but I didn't tell you that. There are kits you can buy for extracting broken bolts too, but I don't know if they work when it's snapped off inside. Was that only two problems, or did I miss something?