Need help with the TC Electronic Spectra Drive tone print drive settings

I saw on you tube that some tone prints have different knob functionality. I've been trying for the past 2 days to find a drive tone print I like but to no avail. The closest one I like is the default drive but the dirt on the peda is to low.  Also, I'm trying to dial in an ampeg svt classic sound.

Can someone familiar with this pedal tell me how to set the knbos using the default tone print setting to get close to an ampeg svt classic?  Or tell me how the knobs function in default mode?   Attached is a photo of my pedal and settings with the default drive tone print. 

Thank you,