the rad is factory, I thought of that myself. As far as the direction of cleaning I've tried both... Its the shits when you battle what should be a simple problem. It is weird though of how the 2 worst crops I don't have problems with.
I've been wet dreaming over Mavs for a couple years, but never have the cash to throw at it
Phantom, I've thought of the JD door, until I saw the neighbors 40 series last year during wheat harvest. Screen is stationary and the brushes rotate. That looks like an idea, but they also have way different coolers and rad. Bigger holes. Thats what my dealer told me today is the next step is set the cooler box up like a 30 or 40 series and my problem will go away. Nothing $10K wont fix right. I've always been sour at the cooling box on these CIHs, my last combine was an 06 23 that had the same dam problem. The JDs use the same idea, with the same rad and cooler stack and you never see those guys stopping to blow out rads... Of coarse they have to get out of the shed first. lol, sorry I had to