The supports or gussets part n71367471, are the back supports to the discharge paddle. We have been shortening them 1_4" then sharpening the leading edge slightly, then bolting them where the center star attaching bolt hole is left after removing the reverse bar. This is similar to the Case guys 'disrupter' bars. We have not found any wear, so far , after removing bars and leaving just the back up bar. On the R40-50 we have had to go in with the retarder bars in the sep. grate bottom to prevent loss. This takes less HP than reverse bars. The later adjustable sep grate really allows one to control loss vs. capacity. We havn't had any real problem with cyl loss except in tall damp wheat straw and this requires an extra retarder bar, tighten up to about two marks closer on sep grate and with little noticable hp requirement we have achieved losses of 1_4 bu _ a or less in 60 bu wheat with tremendous capacity. High wire sep grates are the ticket. However removing everyother wire on the low wires are almost as good but just more origional hassle. The only problem I have heard of - not experienced - is in some extreamly dry conditions overloading of the lH shoe has occured. I think this may be due to overthreshing as this type of crop usually requires less speed and concave clearance but I digress.