Your wastegate (OEM 1995) is not spring loaded. Vacuum holds it closed, until the PCM reduces WG solenoid modulation, reducing the tension against the WG, allowing exhaust gas pressure to bypass. If you have good vacuum at the actuator (15" Hg), you should not be able to move it easily by hand, and you should be able to develop boost (decreasing smoke). If you have good vacuum at the actuator, and are not developing boost, either the actuator is bad, or your turbo is bad. You should not be able to easily move the WG linkage with 15" vacuum at the actuator, so if it's loose, it's bad.