Float needle valve & seat - replace as set, mix& match ok? GS1000 vs GS750 seats

[Chuck78]

I always thought it was best to replace the needle & seat as a matched pair, but have mixed & matched when necessary. I noticed a lot of shopscwill sell the needles without the seats, asthe needles get a groove worn in, whete ad the seats just gey the flat seat worn wider.

I got a new Mikuni needle & seat set earlier this year, but since going 920cc big bore on my bike, I have swapped to GS1000 VM26 carbs to get the 1.5mm main air jet passage (vs .7 or 1.1 on the 750) & the 1.2mm pilot air jet passage (vs the 1.5mm on the 750 VM26'ss). I just realized these 78 GS1000C carbs have the larger 2.3 seats, & my almost new seats in the other carbs are 2.0's. I actually have a junk/parts identical set of 490 00 vm26's that had Mikuni 2.o seats installed! I cannot confirm those to be original, but this new used set is pristine & untouched, but s little wear on the needles.

I still need a good running setup carbs, and was wondering if I should swap my needles over only, or just go with an aftermarket set of needles from the local parts place today?I was also wanting everyone's opinion on whether they should generally be replaced as a matched set as I was under the impression of.

[GSX1000E]

As long as they are the same length, they will work just fine.