Plug and Play Jack Plate

I succeeded in installing the output plate into my 4x12 Crate cab. It required using an electric jigsaw to enlarge a small round mounting hole to a larger square hole. After rewiring each pair of speakers into two parallel pairs, I found the wires attached to the new plate were long enough to connect directly to each speaker without splicing wires. Put everything back together and checked each output jack and all were correct.

I'm afraid I am going to have to drop my rating from 3 stars to two stars.

Upon comparison of the jack plate to what is on my Marshall and Crate 4x12 cabs, I find that the plate is larger than the one on my Crate cab and smaller than the one on my Marshall cab. I might be able to get the new plate to fit but it will require more work than should be necessary. I'm rather disappointed.