Interesting story. I’m curious to see what the notes look like, but I couldn’t find any examples apart from the commonly quoted transcription.

"She remembered he had a limp and wore a built up shoe"

That will give ya a loping shuffle. Maybe!?

A majority of people have a measurable leg length difference of 1/4" or more, although most people adapt to the difference with no apparent ill effects. Unfortunately, some do not, and the effects range from low back or sacroiliac pain to hip, knee, or foot problems.
A number of causes can contribute to leg length discrepancy, including:

Any bone in the leg ever broken, particularly during growth years,
Congenital differences or uneven growth,
Disease-caused shortening of the muscles and connective tissue, a common after-effect of polio,
Surgically-induced differences, especially common after hip replacement surgery,
Compensation for problems elsewhere in the body, such as pelvic or spinal scoliosis.
These biomechanical adaptations and compensations for even a slightly short leg can have long-term side-effects, manifesting as lower back pain, hip and knee pain, uneven gait, and various foot and lower leg problems. These problems are often related to the bodily adaptations that occur due to continuing unbalanced movement, and can be aggravated by the extra stresses of sports activities such as running.

Quoted from google somewhere

That will give ya a loping shuffle. Maybe!?

Yeah, maybe. But Z had a shuffling lope, not a loping shuffle, so it’s entirely irrelevant!

Seriously, though. If you have a noticeable limp, it’s noticeable. If Z had a limp, it was generally not noticeable. We know this for a fact, since it was not noticed on two separate occasions where witnesses observed Z leaving the crime scene.