Hi Matt, Dave had some good questions for you over in settings. We have went a very long way at improving feed chain system. First you need to check the basics. If you have corn varible be sure gap is correct between the front sheaves. Check tention of front right feeder belt and be sure tention arm is free to pivot at grease point. That early of a machine needed that belt tention watched very close for if belt stretched a little a nut and washer under spring anchor would stop belt from self tentioning (we cure that by shortening sping length guide and running belt a touch tighter). You also need to check belt to rear of that one to see it hasn't stretched enough for idler arm to come up against a stop which prevents belt from self tentioning (when we find this and belt is still fine we cut away stop a bit. Check to see front feed corn strippers are not bolted onto bottom of square torque tube just ahead of front feed sprockets. Also be sure rear feed corn stripper just ahead of drive sprockets is not installed. like Dave wondered (we need to know if front feed has a divider floor (with cover off of top of feeder housing can you see all the way to floor where straw flows). We run drum stops in grain position for all crops but you must have feeder shocks (feeder shocks are a must do and are the biggest improvement we made to feeders until lately). Filler across top left of feeder to extend third helical from gearbox across can help a bunch (Gleaner calls it helical wedge kit). Now I'll mention a few other things I have done: Replaced hex head bolts in feeder with pan head to prevent a restriction, Welded in filler pieces or straw diverters in front of square corners both in front feed and rear feed, Installed a floor flush with bottom of square tube in front feeder inbetween and to outside of wear pads for chain, tighten rear feed a bit tighter than specs, Install the faster feeder house pulley on front right of feeder, Install hump on the flat rock door or fingers over the sump if you must have sump system, Installed anti-bow up bracket in rear feed to prevent chain from bowing up to far and losing control of straw (tightening chain a bit extra helped prevent this),Make sure you have the heavy feed chain tention springs, Install the posi-feed roller from Australia (being made by loewen),Tilt rear 30" of front feed floor down 3_4" at very rear and tilt front of rear feed down 1" at very front. Install steep pitch helicals on thresher side or install steep pitch helical to second helical from gearbox to hook it up with feeder corner filler and extend third helical from gearbox with steep pitch helical to get it to drop material onto seperator grate, Install rotor speeps, I've even welded paddles on chain like the Manchester force feed. Best thing you could do is check and remove or install the simple things and be sure shocks are on. Posi-feed drum may help a bunch and isn't hard to install. All this stuff helps but with all this stuff you increase speed so one thing leeds to the next and so on. I don't think I could of posibly forgot anything!!!!! Good luck
