Thanks for that. I know trinity racing now Mcdermott racing in california Still does the bearing pockets. Talked to Harry Quoted $330.
  Do you need to remove anything from cases like bearing that are attacked to cases?
  Was there a big difference in starting after the repair?

You will not notice any difference in starting. This mod is for reliability.
I would remove and replace all bearings and seals while the cases are split. I would also match the case half's and check the crank. I have not owned a Zilla for very long but I do know my Banshees and I would stay away from Trinity. Use someone who specializes in the Zilla. Like Jerry Hall out of AZ or Dr. Q in California.