Also, for what it's worth OP, no Tremoverb is a rev G. They have their own board layout and corresponding revision codes. The early serial loop ones are RR-1D, and the common parallel loop ones are RR-1E. Rev G Dual Rectifiers are RF-1G.
It's true. Even though they switched to different transformer models mid-'93 for Rectifiers, all Mesa amps used Schumachers until they started using Magnetic Components Inc. transformers around 2001. Even the first 3-channel Rectifiers had Schumachers. Any transformer with "EIA606" on it is a Schumacher.