I bought a PRRI shortly after they came out (2008) and have really enjoyed it. It has everything I need, all in one spot: blackface tone, spring reverb, and bias-vary tremolo. But...two problems. Reverb. The reverb is weak - to get the amount of reverb I used to get on 2-3, I have to turn it to 10 (which causes lots of hum). The history is that several years ago, the reverb sounded weak, then failed. I took it to a Fender-approved tech, who replaced the reverb tank and inspected the amp, which he approved as all within spec. I got it back and the reverb worked but was still very weak. Since then, I’ve replaced the reverb tube, have ensured that the RCA plugs are in correctly, and have taken it back to the tech, who swears everything is as it should be. Tremolo. Also, it really bugs me that the tremolo isn’t very deep, and that even the slowest speed is still really fast (my Boss TR-2 speed is past noon when replicating the slowest speed on my PRRI). Should I just sell the PRRI and get something else? Is there some other fix for the reverb that I’m overlooking? I really don’t want to spend any more money on the amp when I could just sell it and try to find something else. Top choices would be a boutique version, or maybe a Vibro Champ (which I’m told has even deeper bias-vary trem, and I could get a high-quality spring reverb pedal that I could sculpt to match or go beyond the analog tank, and without any hum).