UPDATE
I "thought" my jetting setting were correct.. after careful review they were not...
I thought I had the A/S set at 2 turns... nope, it was 1/2. I remember having a lean idle a while ago and adjusted the A/S to clean it up. Also the idle always seemed a little low even though the idle screw was in pretty far... So I pulled the carb for a cleaning, and some rejetting. I swapped out the 45PJ for a 48, and set the A/S at 2.25 turns as a starting point. I also turned the idle screw turned out several turns.
I reinstalled the carb, fuel line etc, and kicked her over. Started easily and settled into a nice idle (a little high, but damn good for a 1st attempt) let her warm up and took it around the house... Damn I think I found a few missing ponies.... I didn't get the chance to really ride it other then around the house, but the throttle response was really good. During my next ride I'll need to tweak the A/S a small amount, and the idle but I think I found the issue... The bike has always ran a little on the rich side... After following my cousin's son on his 50, I'm sure I really got the opportunity to open it uo. With the A/S at 1/2 turn, I believe it wasn't getting enough air for a proper burn, causing too much oil / spooge. I think this change should help with that.
As I was swapping out the PJ, I remember my son's 300 having a similar issue... we were always chasing a lean idle on his bike. I ended swapping out the 45PJ for a 48, reset the A/S at 2 turns and it's been stone cold reliable ever since... Why didn't I think of that earlier??? I wish I had an answer (lazy I guess) My guess is that the 380 has been running so good, I didn't want to touch it... This slight change should make it that much better... Funny, but now both my 380, and son's 300 are running very similar jetting settings
48PJ
175MJ
CEK Needle, 2nd clip
A/S 2 - 2.25 turns
The 380 has a 7.0 slide, while the 300 has a 6.5
I'll report back after this weekends ride.