Roger,
I would strongly recommend that you ought not try this. You may have some success, but my experience suggests that different JVM versions often have subtly different behavior with the different wM products.
If you do unify your JVMs and then have a problem, wM support will have difficulty troubleshooting your problem. The different products are tested with the JVM they ship with.
#Integration-Server-and-ESB#webMethods-General#webMethods