Get a footswitch and use the amp distortion.
what do you not like about the pedal you have now? do you want something to boost your pedal or amps distortion or do you want something that will do what you want by itself into a clean amp
While I generally like that...It makes a number of assumptions, like "he's not already on that channel, and that there is a foot switch!
Gotta agree with EP.
I'll humbly suggest the OP might need to do better use of his current gear, which seems to be more flexible than he realizes.
Use both channels of your amp, then set your TC Mojo Mojo pedal with low drive, high volume and a very clear tone, meaning emphasis in the mids/high-end and dialing the bass back a bit, and voilá.
With your clean channel, notes will stand out a lot more using the OD pedal, and with your amp dirty you'll have way more sustain, definition and increased presence/cut.
Having a two channel amp and a dirt pedal in front is pretty much what everyone needs for a clean/crunchy/lead setup, the rest is sprinkling on top for ambience (delay/reverb) or whatnot.
Except I'm not assuming that because he explicitly said he's using the clean channel and i know that amp has a footswitch input. Orange excels at rock distortion. Use what you have.
You are right Diego. I am continuing to learn about my equipment . I realize I can use distortion but I don't like the distortion for sustain. I am looking for clean lead setup. I was looking at the Electro Harmonix Tone Corset Pedal its a Compressor. I will set up as you suggest and try thanks for explaining in depth. I tried a footswitch with distortion I don't like the sound of distortion coming through, I want a crisp clean sound of the notes with sustain without distortion.
If that's what you want, then you need either a clean boost pedal or a compressor of sorts.
If you realize the MojoMojo can't do a good clean boost for you, I'd suggest getting the inexpensive and very good sounding Mooer Pure Boost pedal.
It's a copy of an RC Booster I think, and it's a wonderful thing for boosting clean sounds and adding sparkle and detail.
It won't set you back by much, and it's the kind of pedal you'll probably want for making clean sounds stand out.
Still, please update us if the settings I suggested with the MojoMojo work for you or not!
Try setting the gain at zero and adding just a bit if necessary, since some OD pedals don't like having their gain set to zero and sound a bit muffled that way.