Thanks for all the help, I finally had some time and ended up taking the hood off so I could check out everything. Yep that's when I found the problem. The hose from the air cleaner to the inlet had dry rotted and collapsed on itself, restricting the airflow. Tractor running great with the hose open.
I had to order the hose because no had anything that big with that bend in it. oh well that's my luck. The new hose should be here on Friday, so the Dexta should be back up and running!!
Thanks to all again!! Charlie