Have you tried calling Johannes (JPM) instead of email ?
I sent him a couple of messages before and didn't get a reply but once I called him and spoke in person, he replied a lot more. I guess he probably gets a lot of emails
![Smiley](http://cal-look.no/lounge/Smileys/default/smiley.gif)
CSP stocks some JPM parts, I don't see the oil pump cover or king covers listed on their site but it may be worth asking.
Good luck
Darren