So let's talk about this last run of jammer clutches and springs.
I could only every use the lightest supplied springs because the mediums would slip forever. ATF type F and 0w20 motor oil slipped wayyy too much (0w20 is may fav for 3 shoe). So I switched to royal purple max atf and that helped a ton, night and day difference. After about a month the springs got wonky. The first couple miles the clutch worked great but then the springs would engage super quick but still be able to slip. That effect was most noticeable starting out on a hill when the bike would bog weird. It took me a little to figure out this is what was happening. I also noticed if I feathered the throttle around 15-20 mph the clutch would engage and if held there, would accelerate great. But just a little too much throttle and then slip city until higher rpm's are reached. But again the medium springs we're still too much slip.
Fast forward to a few days ago I finally bought the malossi springs for the jammer clutch and tried the white ones. Holy shit what an improvement! The clutch doesn't start slipping too soon. It slips to right where it "should", my butt says it feels right. When the clutch does finally fully engage its super smooth. I don't get that slight drop in rpm I had with every other clutch set up I've ever run. Also had it stay in power pulling me (6ft 250 lbs) a consistent 25 up hill with 17x45 gearing. Normally I'd get occasional slipping or the bike taking 5-10 seconds to get up to power.
I won't run the stock springs again. They work for starting out and definitely better than the clutch coming with no springs. But if you haven't switched to malossi springs I highly suggest it. I avoided it because I kept thinking "These light springs already slip too much, why go heavier" but its changing the time that the clutch starts slipping as well as when it fully engages. Just like eso vs blue springs in a 2 or 3 shoe clutch. You can set the eso to engage fully at the same rpm as blue springs but the eso springs will start slipping later.
I am refering to these
This is all on a ported tccd, 19phbg, estoril, 17x45 gearing.
TLDR; The malossi springs in the jammer 6.4 rule!