It may be worth looking at the RG Keen piggyback method. I have had success with this way of getting Si T's to sound great. This method allows you to use two T's with a trimmer to get the lower Hfe you need. Then they sound great. It's the lower Hfe that makes for a great pedal. You all know that.
Just reporting in that I went with the version that has the volume moved back into the middle of the circuit with various component changes. Its works and is a lovely pedal/design indeed. Breadboard had me vexed for a while but finally slowed down and got it. It's quite responsive and has the OD...