Jetting, advice needed please!

Okay so i fitted a new stage6 70 kit on yesterday, also have a set of jets 75-98, i must have changed the jets about 10 times now and growing tiresome, my float bowl is getting knackered too.. basically i put in 98 jet to start with, was okay, when i went full throttle it back fired so i figured it was too big, tried 90, still wasn't the same as when i had my other 70 kit on, tried and 85, would take ages for it to accelerate so i went to a 88, same problem, so i went to a 92 was better but still not normal as when i had it before, so i put on 95, was probably worse and after 15 minutes off riding when i put the throttle down it would hit the high revs then bog and 'sneeze' and i would lose power completely until i released the throttle, it would go fine on low revs and i was forced to rid home at 25-30 mph on my way home after with a loads of cunts overtaking me which i hate, can someone please share their advice, im not sure if there is another something affecting this?

Thanks!

Well what jet did u have in before when ur bike was running nice?

size 50 or 64

Put slightly bigger than what u had on ur firs 70 kit then go up in 5s or sumit if its gettinh worse then go to wts best. Raise the needle if its worse then lower the needle. If u get to the point wherr u wana throw ur bike off a hill then take it mechanic

change the rollers might be a start.... youve chucked a 70 kit on and not even mentioned rollers/exhaust fitted... garantee this isnt even jetting, transmission needs to be close befor you can jet a 50/70

am looking tonight at a 70 kit
It rev's too strong even when the idle screw
Is out quite far !