ran one of my stepdad's 2388s has an issue, it has J&M extensions on the bin however if you fill up barely in the sight glass the separator clutch will slip. the machine has got about 2500 sep hrs I believe and I know it has had extensive amount of new parts but am not sure as for specifics. The incline augur was built up last season I know and helped but did not solve the problem. The slip clutch was also taken apart and cleaned inspected and added washers, the discs looked the same as new ones so he did not replace them. What would you guys look for? Could the elevator chain be worn enough to not keep up put things in a bind whenever it starts getting back back pressure from the top. I have seen the hydraulic augers that go in th bin to help take pressure off the incline but do they help that much,