I finally had some time to mess with it again today, and after reading lots of other posts about them, I got my bias down enough to really let the tremolo shine through. I've never played any other amp with tremolo except my old Delta Blues, and I think my expectations were off. I liked the Peavey, but it seemed to really cut the guitar signal & volume if you turn it too high, where the 5F11 is opposite -- it seems to let the guitar punch through and then it's more of an ambient effect. I like it. I'm probably still going to do the mod to slow things down, but it's really come through now. My voltages I ended up at today are 384v - plate 19.8mA @ #8 54.3% dissipation -34 bias voltage I'll post a clip later.