Ayup John, sounds like you had a good spend there.
I had dealer fit a Scottoiler X system on my T8 when I bought it. They fitted the monitor bracket that came with it, then velcro'd the moniter to that but using same side Velcro on both sides. First I knew of this bodge was when it fell off at 90 banked over on the 500 in Germany. I grabbed it to stop it scratting the tank as it was swinging about on its wiring. Not much fun one handed. I got home & made an ally bkt that put it in the correct position then secured it as it should be with 2 screws.
Don't forget to reset the monitor when you refill the Ressie, as I did. If the monitor thinks the Ressie is empty it stops pumping so's it don't burn out the pump. I really should read instructions beforehand, not the ikea way.