I've alway been uncomfortable taking right turns. Even when going for my L's the instructor said a lot of people aren't comfortable turning right. And from memory a few people have said the same on here. I noticed when turning right i would be holding onto the front brake, so my hand was never fully on the throttle, so my hand wouldn't have a firm grip and the bouncing around would jerk on the brake slightly throwing my balance more out, not to mention my elbow would be pressed near my side making it an awkward angle. The next corner I took, i didn't use the brake at all. Had a firm grip on the throttle and zipped through the corner without any problems. Started using the rear brake more when cornering. Confidence increased straight away. Now I can use the front break while cornering when required and feel that I have full control of the bike.