Can someone point me in the right direction for clutching??

So while id consider myself pretty mechanically inclined (wrench for a living lol) I’m lost with clutching.

13′ xp900, 28" mongerals, dalton clutch weights and spring.

At the dunes this last weekend (little sahara utah) i couldnt make it up sand mntn, when last time i did. Didnt notice rpm last time but this time i watched and noticed in high middle of the hill id be about 7600rpm, in low id be 8100rpm (rev limiter through the whoops at the bottom when in low) …. in high or low i still power out and have to turn before im screwed and stuck haha , the thing seems perfect literally everywhere (moab, mountians, desert, fast, slow whatever) but am i right thinking that not holding 8100ish in high is leaving power on the table?
It does hold 81-8200(if i recall correctly) on flat ground.

All that ramble aside: i dont wanna sacrifice how well it does everywhere else just for that little bit more at the dunes. I dont ride the dunes that often, but if there is a way to make it right everywhere that would be sweet. Also can someone explain "shifting" i keep reading about with the clutch? I assume thats just transition from low to high gear ratios, but could be wrong

Also: doing a slip on, intake, and alba fi controller, will i needa screw with the clutch?

Anyone willing to provide some links i can find good reading material and teach myself some that would be great, as would anyone that could take time to break basic operation/adjusting to me that would be great too.

Thanks in advance –justin