Got the VF4 today . . . based on what I've heard it sounds like I got the new (fixed) version . . . came with longer bolts and a new gasket which was nice as the gasket I ordered was wrong.  Got it installed on the bike.  Gave the carb a quick once over and checked the float needle to make sure it didn't show any grove or signs of wear . . . looked brand new.  Bike started up after a few kicks and seemed to run fine.  I'll see how it does on the next ride.  I'm starting to think I may need to put on a bigger pilot jet so I can adjust the air screw out more than a half a turn or so . . . even though I seem to be running rich, I wonder if by putting on a bigger pilot, I'll be able to lean out the mixture and maybe lean it out some in the rest of the throttle range.

I threw a 38 PJ on today and I think the 38 PJ is going to make a big difference. Made a bonehead move and left the choke on . . . bike was running like crap and I started to think WTH . . . but once I shut the choke off . . . HOLY $HIT . . . with the AS at 1.5 it was snappy as hell, no bog, no hesitation . . . I was worried it might be a bit too zingy and maybe a bit lean . . . came back adjusted the AS in and it died at ~1/2 turn out (where I had been running it with the 35 PJ). . . I adjusted it out 1 turn and ran around the block and it felt good so I figure it'll settle somewhere between 1 and 1.5 which should be just right . . . started it up a half dozen times and it fired right up so hopefully the plug fouling is behind me. I'll leave it for now and dial it in when I go back up in elevation for the next ride. Hope that did the trick!


Plan on riding 5000-9000' with 80*+ temps for the next couple of months.
New set up:

38 PJ
158 MJ
N8RW needle
#2 clip position
AS 1 turn out

Bike ran great up at Kennedy Meadows with the new jetting and reeds.  Had a bit of a concern trying to start it up in the morning . . . it probably was really cold from the night before (temps had to be in the 30s over night).  It would die without the choke on or if I didn't keep the RPMs up, but after a minute or two, it was all good and ran great all day.  Felt a bit down on power, had to drop a  gear a bit sooner than usual, but I guess this is to be expected above 8K feet.   I noticed that I did not have any spooge running down the pipe like usual.  Kinda funny as I ended up going from a 35 to 38 pilot and 155 to 158 main and now I don't have spooge, I thought I would have had more, but I'm wondering if the missing link was the bigger pilot as now I'm able to adjust the air screw out over a full turn (running it at 1.25 out) whereas before it would fall on it's face if the AS was out more than a 1/2 turn when you blipped the throttle.  A little concerning not seeing any spooge as I don't want to run it lean, but seeing how I increase the size of the jets, I'm thinking I may have just got it dialed in finally.  Running about 40:1 premix which is more than the book recommends to be safe.