Hi freakinrikan,
I can only speak for myself but I think most of the custom makers in this sub-forum excel in design but "full manufacturing" (which some may interpret as high volume/mass) is not necessarily their forte or interest.
Perhaps if you adjust your request to ask for design/manufacturing consultant, you may increase your chances.
You might also consider posting the request in the manufacturers sub-form as the companies listed there are more likely to have their own manufacturing facility and the incentive of "full manufacturing" may be more attractive to them.
The advantage of going with a design/consultant approach is that you can first address the specification you want, then find the best place to manufacture it.
If you start with a manufacturer to do your design, you may find yourself restricted by the limitations of their manufacturing facility and experience.
Best of luck!
tgwnn