I just traded for a V.1 Tremoverb head and it has the older faulty LDR's. Being in college, I don't have the funds to have it sent out and overhauled by Mesa so I was wondering if anybody has had experience with doing the LDR reliability mods themselves. Also I read that they replace a PT or OT transformer as well? What's the deal with that change? From the tech notice, I believe there was only about 3-4 resistors changed out to lower the current going to the LDR's. I do have quite a bit of experience building tube amps but I'd figure I'd ask before a take the soldering iron to my new TOV.