Are you running pto at 540 rpm?
I'm not familuar with you particular model but generally
The fan is behind the chipper blades it should be radial blades that do the flinging.
pto speed, feed rate, blade sharpness will all affect the throw out of the chute.
you should have a built in blower on the chipper disc. it will look like blades welded onto the back of the chipper disc. In your case theyre bolted. Check their clearance to the shroud around the fan. Look here for parts diagram, #13 is the parts in question. Looks like theyre should be 4 fan blades there.http://www.pequea.com/images/stories/manuals/CX350-Parts1.pdf
run at proper speed as your doing/ Might be worth looking at the chipper blades and disc to check if all the fan blades are there as well as blade condition.
Some professional chippers have a seperate blower that blowes into the chute to increase throw but i havent seen them on smaller machines
It throws ok when not CLOGGED! I was hoping to add some extra air flow to prevent the clogging. I am sure my blades are dull but it sure clogs up a lot.
Can you explain a bit more about how it clogs up, and what the clog is like?
On your model, the blower is part of the chipper head.
And the blades do need to be sharp, otherwise they will just mush the material you put in, and I expect that is what clogs, and why it clogs. Your explanation might differ tho.