Sickle Bar BF 180(AG Maxx/Enorossi/Rossi)

[Beagle02]

I found out my AG Maxx BF 180 is more than likely a Rossi renamed. I am having a problem with it and was wondering if anybody had suggestion on a cure. I keep breaking the blade teeth head it is the part that attaches to the arms that actually move the blade guards. Both blades and guards move on a separate bar. When it is running it is great have used old john Deere sickle bars that are single acting and this beats them hands down. Had this since brand new for 4 years first two no problems but last year it broke the teeth head the first cutting and replaced it cut the rest of that cutting and the second cutting and the first cutting on the normal fields this year went to cut neighbors for him and it broke. Trying to figure out if I am not setting it right or something needs adjusted or something is bent or mess aligned really need to figure this out it is $125 for the blade head $30 for the teeth bar and 4-5 hours of drilling out all the rivets and putting them back in to get it back to work. Breaking between first and second blade guard set breaks the head and the bar the teeth are attached to. Any body has a suggestion on what to look for I would love to hear it? Great mower does not clump cuts like a champ usually do 1200 to 1500 square bails a cutting so around 3000 a year but something is not right and need to get it fixed there is nothing any more madding in having less then an hour to go and something break and have to wait on a part to come in.