Hi Ne, I haven't had the FlexHd skin graft but I had a silicone implant and also had a hard edge to it towards my underarm where the scar finished, felt like the implant had bunched a bit in that area. I'm three months down the track and have been massaging morning and night and have noticed a marked softening and doesn't feel bunched anymore. Huge improvement and feels so much better. Hoping for you yours goes the same way. But if I was worried I would check with the surgeon, if for no other reason than to put my mind at rest. Wishing you all the best. Xx Cath
