6-point quality 17mm socket on the damaged valve clearance adjustment caps. Never re-install a damaged cap: Get undamaged replacements. Remember it is an O-ring seal so how tight you tighten it is not closely related to how well it seals.
There is nothing like a new set of 29mm Keihin CR Special carb if you are after power production from a SOHC 750 with pod air filters. That said, yes I have used the .5mm washers designed for shimming the slide needle to a half step. Trouble with pods on the stock piston valve carbs is you tend to get a lean idle, an overly rich mid-range, and a lean top end all at the same time. This is defeatable, but you really have to have an above average understanding of carb physics to get there.
As for the ignition: What follows will piss a lot of people off. Please understand that I am still putting 20,000 miles a year on SOHC 750's and I am therefore interested in function not preservation: Forgive me. Dump the points plate completely. Put it on a nail on the rafters of your garage. Get a Dyna Ignition points eliminator kit and never remove the candy dish again. Whilst you are at it get some Dyna DC1-1 ignition coils. One more thing: Loose the Spark Plug Resistor Capps too. Set the secondary side of the ignition up with non-resistor everything. Points & their related early seventies designed ignition components are for people building or restoring museum pieces.
You want engine performance from a SOHC 750 it is easy; you only need to purchase four things: A Wiseco 836cc 10.5 t0 1 kit, a set of 29mm CRs, a Dyna Ignition system (coils & points eliminator), and a better but not ridiculous camshaft. Remember: Be careful for what you wish for. The above modifications will produce a huge demand for better brakes & suspension.
Matt at PSB
