I recently accquired a TenTec 526, 6&2. I want to tune the radio to 147.605, in the FM mode, but I can't get it to tune to .605, only .600 or .610. Can some one point me in the right direction to have it tune in increments of 5 instead of 10?? I can't find anything in the manual about changing the tuning rate. Thanks in advance. Ralph Howes W8BVH