Glad to get your information from the forum.
I think maybe i can help you to solve this problem.
While i need to know which kind of U-part wig you have made? Could you show me picture which could help me to offer some detailed useful suggestions.
And now, i have some general suggestions for you.
Firstly you could try the hair wefts to replace the hair bulk, because, hair weft is made by special machine, and the hair distribution is equality not huge, you can use them secure.
Secondly, you could try the finished wig, you could choose full lace wig, lace front wig, and capless wig. For you information, capless wig is cheaper than others, you can try.
If you need to get other suggestion, you could email me : email@example.com or visit www.ishowigs.com
Hope you will get a brand appearance.