Thanks for taking the time to respond, guys/gals! Some useful advice there. Pretty sure it's not a "fit" issue since I'm an ave size, 5'8", 160 lbs and ride a 17.5 FX-2 that was fitted by my LBS. Suspect it was over riding in the June/July and I tweaked something. Really thought taking 4 weeks off riding would cure it but not so. Cut back to riding every other day now to maintain and def not pushing it. Does not bother me when riding, as I said...just the mount/dismount. See the doc in 10 days and will go from there. Hoping some PT will then do the trick...

Never should have messed with the seat..... Only tried it to reduce numbness in hands on long rides.....