FWIW DS has a high palate. The midwife were worried about it in hospital but I had a good LC show me how to get heaps of boob in there and we have been going great ever since. I did however have tender nipples for a good 8 weeks, never cracking tho but o swore by marcallen cream. I think it helped them keep them from not drying out between feeds as it puts a barrier...
Anyway, I hope someone can help you ASAP *crosses fingers*