The new Herc is same dimensions and majority if the parts will fit the 71. What won't work with the 71 is the new stainless top cap. This requires a new top housing.
The ceramic rod can't be placed wrong anymore. The center post has a floor now. This requires a new rod if the center post is upgraded.
The bottom adapter can handle the black rod so that's not an issue.
You can upgrade the white rod rod and keep your current setup. Or upgrade the whole housing because the top section on the new one has a thread for the stainless top cap.
We will be doing it in packages. Let's say if you want the new rod, bottom adapter, housing, extra ptfe parts. The only thing we are asking back is the rod.
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Silver420Surfer
We have to price it at a price that we don't cause a financial issue. After all we have to stay in business to support our products.