no. I have lightly filed the rounded part of the latch so it is flatter and engages the loading lever better.
I also took a piece of thin leather and cut it to slip over barrel and lever.
Mine would drop when new with only 40 grn.
Now it pretty much stays with 50 gr. The leather is just added insurance when doing a timed shoot.
Haven't shot the new Walker in a match yet, but if it is as good as my old one I'll be ticked!