So long story short there is a bit of slop in my 450 and I noticed that this nut pictured can be tightened. It appears that it adjusts the handle slop so that pressure goes more forward or rearward when the ram travels down. Is that what it’s actually for or have I just noticed something that has no bearing. Why would they use a bolt and nut instead of a pin like the other two links if it’s not for something? Thanks for taking the time to look at my query.