SR70 Bogging when taking off/Torque Spring Help?

After putting a 72 in my bike (ages ago) was running spot on! And still is now, apart from a slight bogging issue when setting off.

Seems pretty intermittent, hardly does it when cold but when its warm it sometimes takes the piss and is getting worse. Havent changed anything recently, plug is a good colour airbox is tight, still got standard reeds in it, taken the carb off and cleaned etc but still does it :/

Bigger jet needed possibly? Standard airbox on it now, but sometimes it will wheelie off the line?
It also needs a softer or harder contra spring (dont no which one) sometimes when I go into a corner and try and put power on theres a delay in throttle response, especially when I try to rev it say at 40MPH on and off the throttle it hates it and will not rev up for a couple of seconds!

Cheers

 

Anyone?

 

Usually when there is bogging issue when warm but not cold it is because the choke is on upon start up. Re jet it with the choke off... see if it makes a difference.

 

Will do, its got a 72 with standard air box (removed restrictor)