NICE!! If it were me I would find some way to fill those carbs full of cleaner reguardless of which way you had to go with them. I would use BerryMan's Chem Tech because its a little stronger than Sea-Foam. Open drains and try to get some to run thru them then fill them and leave sit til you figure out slides. Spraying slides with something to loosen them? I would love to bring that one back.