I have had the same noises with my ACT Street clutch and boomba transmission mount, and was aware that it is normal. I do have one issue though that I am not sure about, and the Dodge in SD hasn't been able to figure out. When I first start up the car, first gear and all gears runs perfectly. It normally always does, but traffic is where I die a little inside. Usually in traffic, you are only inching forward a little at a time. The ACT street clutch obviously makes a bit of noise and rattle when engaging in first gear, but the issue is when I push in the clutch pedal again. The more I creep forward and cannot fully release the clutch, the more difficult it gets to shift, and ultimately, the clutch will begin to feel as though it is going to stall even with the pedal fully engaged. Putting the car in neutral is the only way not to stall, but then putting it in first or any other gear is near impossible. Not until I can drive in second gear will the problem go away, but then the car seems to be slightly more difficult to shift into first and reverse until the car is off and cools down for a bit.
I just had the clutch installed about 2k miles ago, and also replaced the slave cylinder (OEM) because it looked like there was a leak in the old one. The clutch engages beautifully most of the time, it is only in traffic when one has to move a little at a time staying in first gear that this problem occurs.
I was thinking maybe the pedal is a little too low, and as the gears heat up, it gets more difficult to disengage without being in neutral. My question is, can the pedal be raised on this clutch setup? Will that possibly fix the problem? It seems heat related, but I really am not mechanically intelligent. I just like to drive. Thank you for any suggestions or questions. Feel free to ask away, I can help narrow down the symptoms for you.