Looking for feedback from Bourgault cart owners on the metering system. Looking at Bourgault cart for fertilizer application only. The metering augers look rather permantently fixed and not easily removed for cleaning. I have yet to see anything thats turning in fertilizer in damp humid, rainy weather not begin to build up. The opening looks small - its looks like product could potentially bridge. We have been looking at older models with the chain and sprocket speed setting system. Admittedly, it looks like something you might see at a science fair with all the network of chains and sprockets. These might only be an outsiders misconceptions so anyone that would like to comment that has real life experience with these carts would be appreciated.