torque converter help needed

[funkarting]

hello all and thanks in advance
My issue is with acceleration at low speeds. When the pedal is pushed there is no gradual build. the kart just jerks into motion.
Its a 30 series torque converter
I have cleaned both driver and driven units, replaced the spring in driven. all the buttons on driven are in place. center to center distance correct. the belt does appear to be riding low in the driven unit compared to others iv seen. can't seem to figure out how to adjust that or if it's needed.
any ideas would be appreciated.

 

[Joe-405]

Wrong size belt ? Got a pic and the belt number by chance

 

[funkarting]

it was the 5959 belt. I can't recall full number at the moment. Will upload pics tomorrow (it's dark now).
after further research I believe the movable face of driven is stuck on the bushing. (I was unaware of it earlier). Will update asap

 

[c-gar]

When the pedal is pushed there is no gradual build. the kart just jerks into motion.

Funny, that's the reason I'm trying to get a torque converter to fit on my kart.