My in-laws insist on filling out a hand written "Stat declaration" for a will and get my wife and her brother ( the beneficiaries) to co sign it to agree on the way the estate is divided between them. He insists on doing this way because he is too stingy to pay a solicitor. i have advised my wife to seek legal advise but she does not want to upset her father. I went and got him a legal will kit but he insists on doing it his way. do i have just cause to be concerned?.