No. No heel issues with the heel fit wise. I'll have to measure them when I can get my hands on a caliper, but visually the look very close to the same. I held the two shoes bottom to bottom and the Ridgeways (9D) were actually wider than the McTavishs (8E) at the heels. Though this outside measure should not indicate anything about the fit on the inside.
My Brannock size 8.5 and straddles D/E, and I never have heel slippage on any of the lasts I tried anywhere near 8 or 9 in D or E. I can even go smaller if I go to EEE sometimes. My main issue is my high instep, which makes fitting Balmorals tricky. For reference I wear and 8D in my Dalton, Sauk Dr., and suede Dundee (all 511 lasts), but I suspect I would be OK in and 8E in the Dalton and likely would need and 8E if the Dundee's were not suede. Both the McTavish and Ridgeway are listed as 65 lasts.
Edit: Sorry the Sauk Dr. is on the 201 last not the 511.
Edited by ace13x - 1/28/16 at 5:54pm