Hi;
Also try adding an Audio Envelope to the track, that will let you set anchor points and vary the volume in different spots.

I’m embarrassed to admit I used Vegas for two years before I discovered audio envelope! Prior to that I did a bizarre combo of multiple audio tracks and fades to adjust volume … ;-p
Finally, (jumping in before Steve Rhoden does 😉 ) – in Vegas, use the terms tracks and events. Clip is not preferred.
Steve
Win7 Pro X64 on Dell T3400, MultiTB SATA, 8GB RAM, nVidia FX 570, Vegas 10e (and 11) x64 DVDA 5.2(build 133) Sony HDR-CX550V