Recently purchased a Gill box scraper. I am looking for a new blade as this one is worn out. There is no model number on the scraper. The blade is 60 " wide. The hole patern is hole 1 , 2" from end then 13 3/4 " between hole 1 and 2 , then 13 3/4 between hole 2 and 3 , then 13 3/4 between hole 3...