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having a slight lumpy running at 30mph ish, my 850 just doesn't like a constant steady gentle drive..we used to call it hunting.
So having go a good plug colour, rebuilt distributor, idle is good and smooth acceleration revs well and pulls strong for an 850.., fresh petrol i thought check the needle.
Took it out and compared with a new Bull motif EB... the same standard needle as I'm using., the new one is way shorter. IS this correct? Seems a bit odd to me!

I don't hear much that is positive about BM.

Taking money for non-existant stock ......not refunding ......... glacial delivery times ..........

In my experience minis are prone to that light throttle 'shunt' when the mixtures a touch lean. Personally I'd richer it up a flat at a time and see if the shunt disappears.
I used Bull motif recently for the first time as my usual go to shop minispares were out of stock of everything I wanted, delivery was next day, no complaints.

I had a similar experience recently - ordered a pair of AH2 needles and one was long and the other short. The old M needles in the carbs were both short ones, I ended up getting another new long AH2 from the supplier.

I suspect the new ones are longer than the old ones. As long as the diameters are consistent it shouldn't really make a difference as the HS2 doesnt raise up that far.

For reference, I just measured an old EB needle on the shelf; 2 inches long. The new one looks about 1/8” shorter.

I would use the old needle and richen it up as IMACK suggested.

I usually buy from mini spares but they had stock issues with. Most of what I needed. Next day delivery from buĺl motif and no complaints...
Regarding the original post thanks for the replies..ill fiddle with the mixture if it stops raining or try again next weekend..
Sunny Devon!