With this new geometry (to you), you may need to relearn how to stand. On most road bikes, when you are not sprinting, there should be very little pressure on your hands. You'll see photos of pros climbing out of the saddle with just the crotch of their thumb on the hoods, hands completely open. The saddle nose should just touch the back of your thigh on every stroke. If you rock the bike when you stand, the bike should already be moved over when your foot comes down. So the first thing I'd do is to experiment with changing the timing of the rock vs. the pedal stroke, and/or changing the amount of rock.