Tapper to roller cam conversion

I sent that picture of the first cam gear I posted to a cam company, and they replied back today and said “It looks like it’s not centered on the cam”. How in the heck do you center the bronze gear on a cam?
Making sure the cam sprocket is setting the gear the proper distance from the face of the block, & using an effective, positive method of preventing the cam from walking forward, if it moves around it ain't gonna last long.