Hi most people who have these files have worked hard in getting them together and maybe at times they have even cost some money to produce so maybe if you expecting them for nothing you may have a very,very long wait. What I would suggest is try the ones you have and get them made by whomever is willing to do them for you and see the end results for yourself. Why do you need them as accurate as possible ? if the intenet is to probably to sell them ? Search the net,gather what you can and make what you can from this or learn like I am doing and that is research,try and asses then make up your own mind whether its good or bad, this may sound harsh but I would say nearly everyone on this forum would agree with my post, hope this helps.