grinding noise when coming out of reverse

[rx1 man 04]

replaced the track and the drive axle this summer, now the machine makes a grinding noise sometimes when coming out of revese, lots of oil in the chaincase, chain is tight, got the top linkage set up for 13 mm, not sure what the bottom adjustment is suppoed to be, maybe the springs are getting worn in the chaincase. the small one and the large one. not sure what else it could be, chaincase is together properly, I have had it apart several times. anyone have any ideas? found the problem after some further investigation, loose 90 degree bracket on the chaincase, tighten it up good as new.

 

[Indy]

adjust the linkage some more