Do I have to yank my motor becasue of this!!????

[juiceman]

well, although not impossible to hurt the bearing in 200 miles its not likely. prhaps it was due to a mistake by the builder. we are only human. using a micrometer under the car to get end play? sounds a bit wierd to me. most builders use dial gauges mounted to the block then to the crank snout and push/pull on the crank to get an exact measure. have it done right. the worry about it. if its definately out then change the bearing. and hope its not a problem with the crank machining.