The lawsonsiom.freevar.com main will index is based on the IOM Family History Society index so you can get at the wills on the IOMFHS from there.
There may be odd broken links, if you come across any let me know so I can fix them on this site, email address in on the site.
I'm afraid I don't have administrative access to the IOMFHS site to fix things there.
Ian