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http://www.ebay.com/itm/STEERING-AR..._Accessories_Gear&hash=item19eb988cfa&vxp=mtr
The only pics I can see the splines are supposed to be notched to hold the lower mount up for the exhaust housing my concern here is the shift shaft is not centered in the tube. I would check all the mounts good upper and lower. Drop the motor all the way down and put it in reverse. Grab the gearbox and see how tight everything is. If you get alot of movement in any direction I would consider replacing the steering tube and all the rubber mounts.