Thanks i will give that a try , will mark inner and outer rings when the marks no longer line up i will know that the rubber has gone bad and it has slipped . i'll mark it in a few spots . you guys got me all paranoid now . in 40 years have never had a balancer gone bad , just lucky i guess . 8 years and 12,000 miles on my 340 with a made in china balancer and it has held plenty of over 7,000 rpm passes , i often forgot to shift into 3rd gear . when i built the 340 13 years ago i tossed the original balancer just to be safe went with the pro crap thought it was good obviously wrong . will buy the ATI THIS WEEK
