Hi folks. I have owned this amp for about a year, and I like it a lot but I do have one "bug"------It seems very tricky to almost impossible to get the Fender (Twang) models LOUD and CLEAN. There always seems to be "dirt" present in the signal, even with single coils and very low drive settings. The manual even makes mention of the fact that the Twin model stays clean "all the way up" (or something to that effect) but I have always struggled to get this. Always too crunchy! Any suggestions? I'm not a " noob" really, I have lots of playing experience and have owned many modeling devices over the years. Any suggestions greatly appreciated.

Thanks