[LakeCleElum]

Some of those jets are pressed in and can be removed with a pair of vice-grips. Be careful on the copper wire thing. The brass is very soft and it's easy to damage a jet.

Unless it's sat a lot of years in a hot climate, jets can usually be cleaned by carb cleaner and compressed air. The same applies to all passages in the carbs. Some models have metal plugs over the idle jets to prevent an owner from adjusting it. These can be drilled out. Then the jet can be unscrewed and the passage cleaned. One and half turns out is a good place to start upon reassembly.

Bikes from this era came set up very lean from the factory for emission reasons. Usually the pilot jets more so than the main jets. If you can't buy a larger pilot, you can find a drill bit that just barely goes thru it and then take the next largest one and drill it out. Another way to get it to run richer is putting a shim (washer) under the clip for the needle......G'luck..