Carb secondary main jet

[deltarider]

That's how I did it. Just take care you don't damage the slides edge. I'm still thinking of a perfect bench sync. Think popsickle sticks that are 100% identical. The basic idea is leverage. Situate all four sticks under the slides front thus, that on closing the slides a tiny bit further, you cause the ends of the sticks to raise. Check the far ends of the sticks have reached the same height/angle and adjust if needed. I haven't tried it myself, but anyone is invited.

[McCabe-Thiele (Ted)]

If you go for zero gap like I have on my 500 it was quite easy to see the slider twitch as it began to rise.
The down side for me was the main adjuster/stop  screw on the bracket ran out of thread on the adjuster totally compressing the spring on the screw. I ended up building up the alloy stop to compensate so the idle adjuster worked normally.

[Murf]

Thanks, will go for engine side.

[Trigger]

That's how I did it. Just take care you don't damage the slides edge. I'm still thinking of a perfect bench sync. Think popsickle sticks that are 100% identical. The basic idea is leverage. Situate all four sticks under the slides front thus, that on closing the slides a tiny bit further, you cause the ends of the sticks to raise. Check the far ends of the sticks have reached the same height/angle and adjust if needed. I haven't tried it myself, but anyone is invited.

WD40 straw works fine with me and no damage to the slides