David, I don't believe the three adjustment screws do anything on the DeLorean if they are the brass colored ones I'm thinking of. Mike Atkinson vin 16232 "also there are 3 adjustment screws on the > metering body MAKE SURE THEY ARE PROPERLY SET " --- Outgoing mail is certified Virus Free. Checked by AVG anti-virus system (http://www.grisoft.com). Version: 6.0.157 / Virus Database: 73 - Release Date: 5/31/00