Originally Posted by tcwayne

I was using a complete Force groupset on my current frame. I started upgrading a piece at a time to Red. First, the cranks.
Second, the shifters (still have Force RD and FD at this point with zero issues)
Third, replaced the RD and left the Force FD (allz well)
That's how I'm riding it today. Red cranks, shifters and RD. The rest is Force.