I recently took my BNR32 to my local shop to install turbos (2530s), manifolds, dumps and cams and a D-JETRO Power FC. Everything went smoothly except for the cam swap. During the install the exhaust cam would not turn. A litlle too energic coaxing ended up in it snapping. Suspecting it was a problem with that cam they ordered a replacement but still no joy. The intake Poncam rotated smoothly but not the exhaust cam, even after some wet & dry work on the caps. In the end they reinstalled the original cams which rotate fine. Dissapointing as the 2530's could really do with the extra airflow to get them on boost.
Has anyone encountered a situation like this before? Are there any solutions other than line boring the head?
Andrew