DON - I've made a couple "Special Wrenches" also, like a very shallow 7/16" combination for holding the first nut on the special screws of a CC PTO clutch while I tighten the locknut.
Only thing I haven't found the correct wrench for yet is the small 5/16" NC capscrew, 1/2" hex head, that holds the front of the footrests on a NF CC like a 70/72. Head is on the INSIDE of the frame and very little clearance, especially on the left side with the steering gearbox in the way. Have to get to it from the underside, and the flange on the frame means you can't see it. I haven't tried the "MEDIUM Length" Craftsman sockets yet, but I think they may work.
I bought a "Butterfly 3/8" impact" tool several years ago. I never used it much, and always with "standard" non-impact sockets which I dreaded, something about razor-sharp chrome plating swirling around between my bare fingers bothered Me if the socket broke. I got a couple Craftsman SAE & Metric short 3/8" drive impact socket sets and now I use it ALL the time. It's real handy, instant forward or reverse. Except for the flywheel removal, with that impact and a handful of SAE sockets I can disassemble a Kohler in about 10-12 MINUTES once it's on the engine stand.
The type of tool I'm the hardest on is Screwdrivers. 45+ yrs ago when Hot Rod mag still wrote decent how-to articles they did a series of articles on buying your first "Tool Set". It suggested buying a decent big straight blade screwdriver to use as your scraper, pry bar, chisel, back-scratcher, whatever. I bought a 3/8" x 8" Stanley at their suggestion. It's STILL My best screwdriver! I've bought several Craftsman sets and still have a whole drawer full of worn-out Phillips and broken & bent straight blade screwdrivers. If I can ever catch up to that &@%! tool truck I would consider buying a decent set of Snap-on screwdrivers. I live less than 2 hrs from S-O's home office, I wish they had an "Outlet Store" along I-94. I know you can buy that stuff on-line. I went to college just a few miles from their main offices, old college buddy even went to work for them after graduation.
Local hardware store that went out of business two yrs ago used to sell the whole line of S-K wrenches, sockets, etc. MAN they looked nice, not cheap, I understand they're good too, almost as good as Snap-on.