YPVS Loses Position(?)

[2steve]

Dropped both needles 1/2 step more. Left will probably remain down 1/2 step lower than right. That's what the plugs, feel and ears tell me.

Still better, but a sputtering thickness as the throttle opens under load. Annoying.

Rode it further than usual and after a romp through the gears, apparently the bowls get too dry and it slows down to let them fill back up. I'm blaming that on the TZR125 fuel valve.

It was nice to wring it out in 1st, shift to 2nd and feel the front wheel lose contact.

[m in sc]

you're trying to tune out a fuel delivery issue?

[2steve]

Yes. Will have to get a higher volume petcock to make sure that there's no problem dropping enough fuel into the carbs. (Feeding fuel thru a "125" valve to a 350 might be a problem)

Then, drop both needles another 1/2 step. Trying to make small adjustments because there are only 250 miles on the rebuild which was running fine before these possible electrical issues.

[m in sc]

and restrictive petcock . I think a raptor one works. 

[Kawtriplefreak]

RD400 as stated earlier is cheaper and I think better.

[1976RD400C]

I finally settled on a 1978 IT175 valve for my RZ. It has a large outlet and the original 1 into 2 hose setup can be used but you can't turn it on/off with gloves on.

[2steve]

That one looks like is has better reach coming down from the tank 

Might not stick out through the hole in the side cover, but has a lever to grab.

I ordered a piece of crap from Amazon for $20 just to keep things moving but yours looks like a better move.

[SoCal250]

As Mark mentioned above a Raptor 660 petcock (5LP-24500-01-00) should work. You can even modify it to dual outlet if you want. Chuck (aka Supertune) did a write up about the mod many years ago on here.

[m in sc]

That's what I used on mine. 
never had a feed issue even with bigger flatslides  0.02

[2steve]

Thanks, all of you!