mikuni carb new help atv

hey so i bought a mikuni tm 34mm flat slide a while ago i put it on my blaster and experimented and i cant get rid of mid range bog it runs fine on low then when you give it more gas it bogs down and then starts to pick up again when it reaches the power band it rips like crazy but the mid range...

New atv owner here. Just bought a 2000 blaster. 1. Im unable to identify this mikuni. 2. I only see 'Made in Japan' 'Mikuni' and 'WO 13' on the carb. 3. Also whats with the blue hoses that were connected to nothing??? (I removed the fuel line b4 pic) 4. Finally im not seeing the rpm idle...