The pleated pods will rear their ugly head most between about 4 and 5K under load. You'll often experience break-up and stumbling. It has to do with the air flow. These CV carbs like/need a smooth flow to operate and lift the slide smoothly. The pleats disrupt that and cause some turbulence in the flow. That messes with the slide lift. CV carbs don't lift the slide at lower RPMs. Sustained slide lift starts to occur at, you guessed it, around 4K. Instead of lifting smoothly, the slide "flutters", bouncing up and down rapidly. Basically, it's like rapidly turning the throttle on and off, and that's what causes the stumbling.
Yes, adjusting the cam chain following the "book way" can be frustrating on this bike too. It's very easy to mess up and end up with the chain way too loose. The alternative simple method we've come up with is based on how Yamaha instructs you to do it on their 4 stroke singles - you check and adjust it while the bike sits there idling. You watch the spring-loaded plunger inside the adjuster bolt for about a MM of in-out movement. More than that and it's loose, no movement at all means you've set it too tight. Easiest way to go about this is to tighten the adjuster until the movement stops, then loosen it back up until you get the about 1mm of in-out movement you're after.