Sorry, i dont have patch with normal letters, i try'ed make for self normal C1 font but give up after same type problem like in you questions, but I thought problem in LargeFont-e and SmallFont-e, maybe you can solve this problems for another way.
Problem in systextures/l2font-e.utx
try change alpha channels (in photoshop with dds plugin) in LargeFont-e and SmallFont-e
make more thinner alpha channel around each letter.