thanks for all the feedback,
I have been to no fewer than 7 canadian tires, plus their website, and cannot find what is need. the 18mm spark plug tool (with the black handle) does not cut it. An 18mm deep socket does reach spark plugs 1 and 4, but not 2 or 3. I cannot locate a thin walled socket, and do not have a grinder to make my own...........
i have spent the better part of a month looking for this, and I feel like a complete tool, pardon the pun.
I will keep searching, and if I find something, I will post immediately.
thanks