Step brother is trying to contest my fathers will. It has been 4 years and I have paid all the taxes and expenses since my fathers death. He found a w

Wrote a 30 page reason why not my fathers signature, he died 2 days later. He also tried to call me the day he wrote the will., and he was a 40 year diabetic who was legally blind in 2005 when I took him to Dr. Babel for a bilateral victrectomy to remove blood behind his eyes. The witnesses to my fathers will was his 79 year old brother who on the same day renewed his gun permit. The second witness was his handy man that helped him around the farm which he paid him with checks. Please help me if you can. Cindy Coogan (814)8274343 1815 Meadville road Titusville, pa. 16354