Changed the negative feedback, power amp response and just sort out of an all around refinement of everything. I forgot all the exact changes but maybe he'll see this and share more.
It wasn't what most recto mods are. Most people want to make it a tighter, razor sharp metal machine. He voiced the mod around the vintage mode on mine and it was just really inspiring to play. Juicy and "bouncy" but for huge modern rock stuff but could still crush too. It's hard to describe but before the mod I had it sounding pretty good with with different tubes but after it just had something special.
Shortly after getting rid of it for a Mark IV I played the multi watt recto in hopes that I would like it, especially since they gave it an improved series loop but I absolutely hated it compared to mine. (Mine was a standard pre-reborn three channel)
Since then I've played a nice early two channel and gave the Multi watt Triple another try and I just find them very uninspiring after a few minutes of playing. The two channel was cool but my Friedman was better. The multi-watt triple in comparison was very hollow, bright and grainy/raspy sounding (but really tight and mean, like chomping on tin foil
while mine was like a thick juicy elastic chewy sort of thing but still had sizzle on top. Played some Ubers back to back with the two channel and reborn triple and liked the Ubers way more. But that recto was just my thing. Some of it is probably sentimental too but it sounded great.