If this has been discussed somewhere I apologize, but I couldn't find it in the search function. I've ordered a 520(hoping the tools are the same as the 500 for the most part), and am planning what to keep with the machine and wanted to put together a tool kit with the most popular/used items needed to work on the machine. So, any help on different tools needed... ie wrenches/sizes, sockets, screwdriver, specialty tools, etc. would help out to see if I'm missing anything specific. TIA