Mikuni carbs can feel tuned right away but most people are off 70-80% off of jetting and the float level has to be perfect or it will feel like running out of gas
If you replaced the condenser and didn’t use use a original Bosch then put a original one back in the crap aftermarket ones are junk when hot
If coil is stock external those are bulletproof like Bosch condensers
If old style internal coil or the treats points Stator with the internal coil Forget about it
Do not use any of those systems