Which is the one with holes lower down on tube?
As the one has all the holes dropped about 1/8inch lower than other.

Imguessing it is rear one as it will allow more fuell through sooner with needle lowered in tube?
Am i right??

 

I found emulsion tube pic in other thread and could not make out details because of low resolution, then i opened photo in seperate page and it blew up clearly.this is on my phone browser.
so......lower holes are from front tube......go figure???

 

Yes the lower holes closest to the hex end is the front tube