Sure
eric@palmtreeservices.com.au
The kanga grinder is around $15000 Aussie.
Yes you can grind at different hts but when you buy them they have a chain and locking pin to stop you lifting the head up ... everyone takes that off!
How much does that unit in the video and pic you have cost in the USA and is it a 25HP Kohler.
Do you know what the engine RPM is and the Cutter wheel rpm is and the dia of the cutter wheel to the tips of the teeth.
I did some homework in this area and found that soft to hard timber's cutting speed is between 6000sfpm and 10000sfpm which equated to an ave 1800rpm on the cutter wheel dia I have, the idiots who geared mine had the cutter wheel doing 2500rpm and bragged how it turns stumps into sawdust/powder ... dumb asses, you need to cut it not pound it. Also it left the machine with little torque.
I swear by Rayco Superteeth, those 1/2" ones in pockets just get bent or snapped now.
Looks OK, as it is fairly long it may be a little more difficult to turn and see.
I'd have to get a close look on how it's cutter wheel assy is held in and bearings etc.
I think you should install a heat shield around the muffler and get a centrifugal pre cleaner fitted to that air cleaner assy.
The vid had no sound.