Just write your settings here. Maybe we can sort it out here?
I have the OTS HRM 50 and it does the Robben Ford thing pretty well
on either my 2x12 cab with G12H30 Heritages or my other 2x12 cab
with EV12Ls. Latter is perfect for the Dumble stuff. No harshness or scatzy.
I have an older video where you can here it.
Alex