Hacked Servo Speed Issue

Hey all,

Last night I hacked a MG90S mini servo. Rotating clockwise is working fine, I can control the speed from around 1500 down using myservo.writeMicroseconds. Counter clockwise though only moves at roughly one speed regardless of what it's told.

I noticed my pot in the servo was a bit different than all the instructions I've seen online. Mine had three "bars" connecting the pot to the chip, not three wires. I'm guessing this could be a cause of my speed problem. All the instructions say to leave the pot positioned "in the middle" but mine does not seem to have anything to position?

Anyone seen this before? Suggestions?