Excellent tutorial!!! :biggrin:So I took the plunge last night and took down my VP70z last night to figure it out.
To answer the question above, the slide take-down retaining catch (42) does not allow the trigger to come out. You will also have to take out the big pin at the rear (29) as well as the safety to get it out.
I would note that putting this part back together required making a thin flat shim from an aluminum can to compress the detent and spring (40 & 41) when re-inserting it. If you don't, you have a hole in the slide take down where it pops back up and locks up the re-insertion as you aren't able to compress the spring and detent. This took me about 25 minutes of frustration until I made the tool to solve it.
I also took the safety off, which has another tiny roll pin on the black "safe" side and then it comes out and releases the drop safety as well.
View attachment 230224
I then proceeded to push the trigger spring guide bolt (23) out of the hole in the support plate (24) and then used really long skinny needle nose pliers to pull out the plate. It is not epoxied in. This gave me the access I needed to adjust the trigger spring.
View attachment 230222
I may do another thread with the "how to do a trigger job for the VZ70z", but for those interested the dimensions of the spring are 2.138" long, .185" outside diameter, .016" wire thickness. I cut mine down to 1.315" and the trigger is still long like a staple gun, but now is about the same pull weight as a stock double action trigger at about 10 pounds (instead of the 18 plus pounds it was originally).
I want to thank the people in this forum for providing the starting information I needed to do this and I hope others will find this information helpful.
The VP70z is one of my favorite pistols for nostalgia and now to shoot.