Thanks guys for all the comments and support - much appreciated.

Nice!  Tell me more about the paper you used for the stencils... I've been considering doing a re-stencil of my Williams "Doozie" cab, and have been thinking of using "parchment paper" (cooking paper).  Comes in big long roles, and its cheap.

The freezer paper is what was mentioned in the RGP link in my post above.  It is very similar to baking paper, except with a shiny/plastic side.  I bought it in the 75 sq foot size (it must be from America), and this is a wide enough roll (18 inches) to work with the side of the cabinet.  If you google "reynolds freezer paper", you will find more information on it.

Once I had traced the pattern on a sheet of the freezer paper, I first put a 2nd same sized sheet of freezer paper under it before cutting with the xacto knife.  In that way, I cut the exact pattern once for the two sides.  In doing it in this way, I had to remember to place the 2nd sheet plastic side up/paper side down (ie. reverse order), to create the mirror/opposite stencil for the other side.  Don't even think about reusing the same stencil for the other side - once it has been sprayed and removed, it is not reusable.

You are meant to (I believe) adhere the shiny side of the paper to the cabinet.  But I found that in trying to remove the stencil from the cabinet, it left behind some of plastic sheet still attached to the cabinet.  This had to be removed later, which was a bit of a further pain.  For one of the 10 stencils needed for the machine, I actually accidentally did not place it in "reverse order" under the traced stencil before cutting (ie. BOTH stencils were placed "paper up" before I cut them).  This meant that the top stencil I used on one side of the cabinet with the plastic side attached to the cab, but the other one I had to attach to the cabinet with the paper side adhered to the cabinet.  Hope that makes sense what I have described.

I actually found that, when removing that stencil, there was next to no freezer paper residue left on the cab when removing the stencil.  So, in the future cabs I have to do, I will be trying to do it in this way - ie. adhere the paper side, and not the plastic side, to the cabinet.  I have also learned that to mask as much of the stencil before spraying the low tack spray.  Keep the spray as much as possible on the edges of the where the stencil is needed.  This helps minimise the area attached, and hopefully minimises the cleanup after.

Here is a link for a local seller in Australia for the freezer paper - http://www.usafoods.com.au/Other/Kitchen-Goods/Reynolds-Freezer-Paper.  This is as cheap as I have found for it, but at $10 for this roll, a pretty good buy.  One roll can cover almost 2 machines (it is just a bit short).  Alot of labour in cutting, but a cheap and effective stencil overall.  And if you google Krylon easy tack spray, you will also find the adhesive I used.  Here is a link I purchased it from - http://carreroart.com.au/shop/products/Krylon-Reposition-Adhesive-Spray-No-7020.html.

Hope this helps, if you have any other questions, ask away.