Help with Concorde Conversion?

[Mr. Lime]

I'm currently working on a Komet Concorde kind of circuit with EL84 output tubes.

The amp sounds not bad at the moment but there seems something wrong with it. The tone stack is not really effective. Only the treble pot has a useful range but the mid control does very little. Bass gets a tad muddy at noon and doesn't contribute anything needful to the EQ.

Next problem is the presence circuit which seems to have no impact too. I tried several combinations with 8 ohm or 16 ohm tap and different feedback resistors. It's pretty much standard so I added a feedback-defeat-switch to hear the difference when no feedback is applied. It even seems to get louder when the feedback is added and a bit less when added. Normally the other way around should be the case!
I tried so swap the leads of the output transformer to hear if the feedback has been positive but that doesn't made a difference. Also the presence cap was replaced because I thought this one may be broken.

As written above the amp doesn't sound bad neither it oscillates but the tone controls are more or less useless.

I use a power brake between the amp and a EV Speaker so the amp is cranked up when I test it and there's no MV which could make the feedback circuit weaker. Only the Hi Cut circuit is added.
Never played another Trainwreck clone so I have no practical experience with this circuit. Have those circuits generally a fixed response with little tone shaping especially when overdriven?

Any advice would be appreciated!
Thanks

[Roe]

the 1m and .1uf may be wrong at the inverted side of the phase invert input

[Mr. Lime]

I checked the inputs of the PI, they were fine.
Has the cathode resistor on the PI an impact on the feedback loop? Maybe 1k5 should be halfed for hotter bias and more output swing?
The feedback resistor is now lowered to 47k which made a bit of an effect on the presence but it's still not very useful. It starts to whistle at some point.
Anyway can anybody give me some suggestions how to make this circuit tighter?
I thought about replacing the tone stack or at least to move the bass control way more back to the power amp and maybe install a fixed resonance circuit to get some chunky palm mutes..

How about 6V6 instead of the EL84s?

Maybe the cathode follower can be ditched as well as it contributes practically nothing to the circuit. Has anyone ever tried a direct coupling of the cold gain stage and the PI?

[sluckey]

I checked the inputs of the PI, they were fine.

That .1µF should connect directly to the grid.

[Mr. Lime]

Thanks for the advice but I‘m afraid that‘s just a drawing mistake. The cap is already connected to the grid.

EDIT: Updated the schematic in the first post.

Here's what came to my mind:

left one is a direct AC coupled PI and the right one is a resonance control like Blencowe described in his book without feedback on the inverted side of the PI while the feedback is applied at the cathode follower output similar to the Bassman AB165 model.

[sluckey]

Thanks for the advice but I‘m afraid that‘s just a drawing mistake.

Of course. But that's all we have to go by.

[Mr. Lime]

All problems are fixed meanwhile.

I now have all parts together to transfer my current prototype amp into a new chassis in which I would like to have a clean layout.
A 3D CAD software helps me to plan the drilling and I wonder if I should better move the transformers for a better noise layout?

Generally the inbut jack should be as far away as possible from the OT.
Here's a Komet to compare to my plans.

Komet Layout.png

What would you do from scratch or what's to improve layout wise?

Komet Layout Chassis.png

Thanks a lot