Mine is also making a clicking noise, however doesn't seem to be making any difference.
I've had mine a week or so, and so far seems very good. Shame the wheel can't spin in both directions, then one could do knives on the top, as it is doing one side has the handle in the way. yes i know there is a belt jig for knives, however i am happy to do them on the wheel - if it were possible...
One query for anyone using the vision wheel. you get 2 glass wheels, so 4 grits without changing anything, however it looks like you can only use one side of the vision wheel.
so with the 3 supplied grits for this, have to peel of and reattach each time? this would seem to be a pain, and also you will get dirt sticking to the removed discs so won't be flat when re-attached.
of course i can purchase extra wheels, however this seems almost necessary to be able to use them, and from what i have read, the kit comes with everything you need, and the vision wheel is a "key part of this innovative product"
am i missing something?