A few years back, as my body settled into complete recovery from a broken hip with two titanium rods inserted, I got a professional fit from an awesome PT. My primary goal was to eliminate left knee pain - the broken hip was on the right. Along with some other tweaks and exercises, we decided on a shim under my right cleat, to counter the fact that my right leg was now shorter than the left by a fair bit. I've been riding pretty much pain free since. There are a lot of issues specific to my riding posture due to the fact my left arm is missing at the shoulder that have taken a bunch of years to straighten out, but I feel I'm pretty much there.

In preparation for an upcoming gravel bike build, I recently bought some mountain bike shoes and SPD pedals, and started running them on my Domane to get used to them. I did not put a shim in or try to set up the cleats to mimic my road shoes (wouldn't know how anyway). No issues over three or four rides until yesterday, when a fairly hard solo effort - 40 miles at 19 mph average - brought back the left leg pain. The first 20 was into a headwind and I spent the vast majority of the ride in the drops.

Once the gravel bike comes in, is it necessary/advisable to go back to my fitter for a bike-shoe specific fit?