Just an FYI that a previously nearly impossible to find ball guide part for CV is now available thanks to Pinsider @1980galaxy. WMS part number 04-10253-1(RHS) may now be ordered via the following Pinside link.
https://pinside.com/pinball/market/classifieds/ad/143898
I ordered one of the ball guides and received it yesterday and the part quality is excellent. If you have a CV you may want to order this part as it has been very difficult to source for a long time.
Gord