Sorry, DJ was just an abbreviation for dynojet, they make kits but also sell jets individually. If you buy the normal dynojet kit, BTW, the jets don't go high enough IMHO, the biggest is I think 148.
DJ are the most common jets, I think- they make the most common kits, and the dyno machines for that matter
So when people talk about 150 mains they'll usually mean dynojet.
We get bigger pilot jets to start with on the UK bikes, forgot about that.
I'm kind of assuming mine's lean at wide open... i have the classic SV bump at 5/6000 revs that tells you you need bigger mains (if you cruise at 5000-6000 then crack the throttle open, it lurches and is slow to respond for a moment, then picks up) It's gone with the twin system it's been wearing for the last month, but still happens with the single.
The only thing you really need to know, is that the screws in the carbs are absolute crap and can be difficult to get out. I would invest in a pair of good mole grips and an impact driver (screwdriver you work by hitting with a hammer) before you start, because they're tricky to get apart. I've got the spec for the screws somewhere, I'd try and have better replacements with a hex or allen head to hand as well... Chances are you're going to mangle at least one screw beyond reuse.
Remove the choke cables from the handlebar end if the screws at the carb end won't shift- great tip I got from Viney. Saved me a lot of hassle.
Other than that they're dead easy to work on. Just badly specced screws as usual.