Re: clutch adjustments
I found the proper sequence is loosen the cable stop and if it still slips only then screw with that flower nut. Adjusting the stanchion collar did little. Also do not remove the spring between stanchion and clutch arm as has been suggested here. And don't hurt to sand/clean pads and make sure they "float" while you're in there.
Personally I don't think the pads wear fast even on my slant head with SBP pipe. Almost 2k miles now and they looked good when I checked last week. I don't pedal up to speed like I should either. Also my oldest bike has no compression but the clutch still ok after 14k. Very surprising considering what they are made of.