I needed a pair of 142 main jets to richen my mixture.
I got them off a local bike shop while I waited for my RO ones to arrive.
Thing is,they are different looking to the keihin ones I took out.
The external part of the jet is much deeper.
( I just found a pic of a DJ jet,it looks very like the jets I got)


I took it for a quick run to test and she feels wooly at about 11k then clears out.
How would I identify Dynojet jets?
I'm on the dyno again Tuesday,so this isn't really an issue.
Just curious.

All jets to suit NC30/35 carbs are approx. 8 mm long by 6 mm. If they don't look like that, then I wouldn't use them. Haven't used Dynojet myself, but most jets have the maker and size stamped on them.

Got the correct jets in the post this morning.
I def have DJ jets installed.
That explains everything,
Thanks for the reply.