performance testing - how to get transactions number reduced with Loadrunner Controller -

on load test loadrunner controller, have script make 1029 transactions per hour 1 virtual user,with 1 "number of iteration" ,"ignore think time", , pacing setting start every iteration @ random interval every 3 4 seconds want reduce transactions 45 transactions per hour. set think time "limit think time : 65", without success. knows how reduce number of transactions. there run time setting must changed transactions reduced?

use 'fixed' intervals of 80 seconds.

45 transactions per hour
3600 seconds in hour
= 80 seconds per transaction