Trinity, Post your e-mail and I'll respond with mine right away.What crops do you runIJ We also run some other color paint and they have now chromed their clean grain and tailings elevator boots and both chain drive sprockets.The bin loading auger is also chromed.We have a very talented local manufacturing co.that has made us a stainless steel clean grain elevator and has offered to make us stainless steel grain bin floors.loewen now does a little custom chromeing for us also.loewen has offered to help design a real concave.High wires to reduce shuck plugging,wide spaced to enhance seperation,deep cross bars for added strength and double chromed for durability.They just need someone to send parts as samples and they would make new improved parts for you.Cylinder bars need to be high front wide spaced extra deep double chromed or chrome alloy also.Maybe they could chrome the rotor teeth for you alsoIJClaas needs to make the machine with premium performance have premium wear resistance.Thats how to build resale value.The expense would be small compared to the value it would add.Has your dealer updated your machine to the more wear resistant rice kit partsIJI am a farmer and don't sell anything but loewen(and maybe others)does need someone to work with to design the tiger concave.Their e-mail is www.loewenmfg.com Phone: 204-324-8621 ask for Warren loewen head of R and D.Our machine has a brand new stock concave or I would send it in.These machines are close ,belts and bearings last,its the grain handleing parts that need the updateing as well as the concave.In high yielding crops its amazeing the bushels these machines will handle,updated these cats could really snarl.Good luck! Tiger