Having owned 3 cts and cts2 combines I have doubts that any of the aftermarket parts will help you in canola. I did learn a few things about the machines in canola and deere does sell some parts that will help you.
If the cts combines have any hours at all on them, you want to replace the vanes that are under the intake end of the tine separators. They are key stock welded onto a plate that bolts in under the tube. With any kind of wear the canola will hesitate and not feed in. While the tines are rolled back you want to replace the "Z" shaped paddles on the intake on each tine separator. The new "Z" paddles from deere have grooves cut in them and are like fingers to help grab the canola straw (the old ones are flat steel).
Run your tines on high speed. If you only have the slow speed pulley, you will want to buy the high speed pulley (assuming your canola straw is very dry and brittle). The cts combines break up the straw badly and overload the cleaning shoe. You will want to use the blanking plates under the tine separtors if the straw is brittle. I cover the back 4 or 5 rows of grates on each rotor. Play with the cylinder speed. Some years I run at 400 rpm in low range on the cylinder and others run at 700 rpm in high range. You want to push it hard, and if the cylinder is too slow it will backfeed.
On the overshot beater, that feeds into the tine separtor I installed new paddles from deere that have a "V" shape in the center (they try to split the flow of straw into 2 streams to feed the 2 rotors better), but I am not sure if they really made any difference.
Because of all the straw on the cleaning shoe, you will want to have your sieve open a little ways and more fan speed than you would expect. I leave my cleaning shoe settings the same as I had them on wheat.
Overall the cts design is not very good on dry brittle canola straw, but they will do the job. Often starting much sooner in the morning when the dew is on, or as soon as possible after a rain will help a lot. Unlike straw walkers which will plug when the straw is tough, the cts will keep running.