Adding blender/mixer circuit to my Keeley 6-stage phaser

[Super Locrian]

I have a Keeley 6-stage phaser (now discontinued) that I like a lot, but I really would like to to be able to blend in my dry sound.

I am considering to add the following blender/mixer circuit to the pedal:

http://shop.pedalparts.co.uk/Blender_-_signal_mixer/p847124_8681943.aspx

http://pedalparts.co.uk/docs/Blender.pdf

Any reason not to try it, besides forfeiting the warranty? I have some soldering experience, and the kit itself is super simple.

I assume that I don't need to worry about phase inverting issues when the pedal itself is a phaser?

[Mark Hammer]

Given that ALL phasers, Keeley and otherwise, already do blend dry and wet (generally in 50/50 proportions), I don't know that you actually need to incorporate that little doohickey.  It's a useful doohickey in some instances, but here it is simply superfluous.

Perhaps more importantly, you would need to locate the mixer stage for dry and wet signals in the Keeley pedal anyway.  And once you've done that, you should be able to simply vary the value of the mixing resistor that combines the wet with the dry, so that you can dial back the phasing effect.  I'm assuming that's what you want to do, right?