Ok, so I seem to have taken two steps forward and three steps back now... have put a little less than 200 miles on the bike in the last few days, and it
was getting way better - until about the last 20 or so miles. Seems like something broke loose in the pilot circuit and is now hosing things up again. The wildly erratic idle, popping and backfiring has returned, and it seems like the left side carb is cutting out completely at times leaving it running only on the right side cylinder. Only low speed is effected, and after I get past around 3-4K RPM, she runs smooth, strong and hard.
So it looks like the carbs are coming off again
But I do have a couple of tuning questions! The bike is, AFAIK, completely stock with the exception of the exhausts - I replaced the stock ones with some short TORs back when I first got the bike over a decade ago. That means it has a #42 pilot jet, #110 main jet and stock needles with 2 shims each. Pilot screw is the "D" head thing and I have not touched it (don't have the D tool for one thing!).
I plan on getting new pilot jets, as I fear I may have munged them up when cleaning. Should I also get new main jets? They seem fine, but I read that different jets help when running TOSs. I'd prefer not buying them if they really don't make a noticeable improvement though. Anything else I should get. Don't want to do this a third time!
Cheers,
Brad
PS: Are two shims on the needles the stock (2004) configuration? I was looking at the TJP tuning paper (Jekns Bolts), and it says there should not have been any shims?!?
