Disclaimer...I do not recommend you try this. This is what I did w my 360. Messing w the carbs is a quick way to Fuck up your bike up.
This mod has yet to be thoroughly tested.
Not gonna mention any names here, but...Whilst I sit and wait for more experimental parts to arrive from Florida...cough, hint...
My bike was running great w this carb set up...
PJs super improved Voodoo
new Keyster float needles
Old stock A/F needles and springs
19.5mm float height
old stock 35 pilots
old stock 68 primaries
new keihin 112 secondaires
old stock diaphragms with stock slides
new keyster stock needles and new seats.
new K&N filters
The only area that was questionable was cruising in 6th gear at 60mph, I think its about 4800rpm give or take.
I could see on the O2 sensor she was approx 11 to 1 A/F ratio.
And at 4k rpm in 3rd & 4th she would dip down to about 10.3 to 1 (no sputtering or popping) But, I know below 10 to 1 she will start to run poorly.
I wanted her closer to 12.8 to 1 without going over much.
So, here is what I did.
(First thing I tried was JB weld...it didnt work.)
The main primary emulsion tubes measure 1.15mm at the squirting end (pee hole) and 1.90mm throughout the body.
I thoroughly cleaned and clamped the 1.9mm in the vice, to hold and act as a stop.
I used a 1.0mm drill to shove some flux down the pee hole to the stop (1.9mm drill)
pulled the tube off the 1.9, cleaned the flux off the tip of the 1.9 and re-inserted.
I hit the tip w the propane torch for just a couple seconds to speed up the heating process...then used the soldering iron to keep it hot. and filled the tip w solder.
Then filed the excess solder off smooth.
Using the pin drill. I hand drilled the tip out to .82mm.
So far, this mod has worked out great for my bike.
Now, she is cruising approx 12 to 1 at 65mph in 6th, and dips to 10.9 to 1 at 4k in 3rd and 4th.
Just a note...I tried drilling to .76mm and it was kinda unstable. It cruised ok. but, at times it would hit 15 to 1 and it died on decel to a stop sign, once. Thats the reason I upped to the .82mm size.
I haven't yet gone for a longer test ride. Also, on one test run the idle went out of control...lean. Acceleration was still fine. So, I can only assume the pilot jet got clogged. After a thorough cleaning I haven't had that problem again.