Took the bike out today and the weirdest thing was happening. As I accelerate in any gear from 5000-7500 rpm, the bike seems like it has the hiccups and won't really accelerate. I have to turn the throttle a bit more aggressive and get it to about 7700 rpms and then its fine. theres a little popping noise everytime I accelerate throught that rpm range.

Anyone ever experienced this before?
Any ideas what the problem could be?

Bike Model: NSR250R SP PGM3 (MC21)



Bike Info/Mods: HRC Black Box

HRC Reed Valves

HRC Reed Valve Spacers

HRC Reed Valve Stuffers

HRC Full Carb Setting Kit

Tyga Lightened Fly Wheel

HRC RACE Plugs

Dog Fight Stainless Steel Pipes

Bomax Motorsport Modified Air Box

Blue Anodized Quick Preload Adjusters

Dizzy MC21 Race shock.

NHK Adjustable Steering Damper

Honda Magtek Wheels Freshly Painted Flat Black

Tyga Step Kit

AFAM Sprockets 14t Front and 41t Rear

DID Gold 520ERV Chain

Michelin Pilot Sport Tires

HRC Race Break Pads

Heavy Duty Clutch Cable

Stainless Braided Mesh Lines Front and Rear

Posh Digital Temperature Gauge