Hey guys, just picked up a Kustom Defender 5h. For the price, a pretty decent little amp. I really like the clean tones I'm getting from it but when you really start to crank it up I find the drive to be rather harsh. I decided to swap out the preamp tube, first I tried a different 12ax7 and found little to no difference as far as clean headroom or tone. I decided to try a 12at7 and, to me, it was a vast improvement. More clean headroom. However, when the amp starts to break up, I still find the tone a little harsh for my liking. Should I try swapping power tubes next? I've thought about taking it to my local repair guy for some mods (master volume, tone knob). But if I can swap the pt myself and tone down the harshies to save a few dollars I figure that should be my first route. This is my first tube amp so I really have little to no experience when it comes to this stuff. Any suggestion? I'm not going to use the amp for much distortion, but when I crank it i don't want so much harshness. Thanks guys!